Fix typos and misspellings detected by github.com/client9/misspell

[seratch]

Related issues
None.

Describe the proposed solution
This pull request fixes several typos and misspellings detected by https://github.com/client9/misspell . I've reviewed all the detections and skipped a portion of them because they are false positives.

before

$ misspell .
core/src/main/scala/com/salesforce/op/dsl/RichMapFeature.scala:247:58: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/dsl/RichMapFeature.scala:376:58: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/dsl/RichNumericFeature.scala:448:97: "disticnt" is a misspelling of "distinct"
core/src/main/scala/com/salesforce/op/dsl/RichSetFeature.scala:58:29: "occurances" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/dsl/RichSetFeature.scala:87:29: "occurances" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/dsl/RichTextFeature.scala:184:58: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/evaluators/OpEvaluatorBase.scala:174:23: "differnt" is a misspelling of "different"
core/src/main/scala/com/salesforce/op/evaluators/OpEvaluatorBase.scala:191:23: "differnt" is a misspelling of "different"
core/src/main/scala/com/salesforce/op/evaluators/OpEvaluatorBase.scala:250:23: "differnt" is a misspelling of "different"
core/src/main/scala/com/salesforce/op/stages/impl/classification/OpMultilayerPerceptronClassifier.scala:131:46: "probablistic" is a misspelling of "probabilistic"
core/src/main/scala/com/salesforce/op/stages/impl/feature/SmartTextMapVectorizer.scala:52:8: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/stages/impl/feature/SmartTextVectorizer.scala:54:8: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/stages/impl/feature/Transmogrifier.scala:525:65: "occurences" is a misspelling of "occurrences"
core/src/main/scala/com/salesforce/op/stages/impl/preparators/SanityCheckerMetadata.scala:233:86: "occurance" is a misspelling of "occurrence"
core/src/test/scala/com/salesforce/op/evaluators/OpMultiClassificationEvaluatorTest.scala:99:77: "prediciton" is a misspelling of "prediction"
core/src/test/scala/com/salesforce/op/features/TransientFeatureTest.scala:53:54: "contruction" is a misspelling of "construction"
core/src/test/scala/com/salesforce/op/stages/impl/feature/TextTokenizerTest.scala:114:19: "comision" is a misspelling of "commission"
core/src/test/scala/com/salesforce/op/stages/impl/feature/TextTokenizerTest.scala:116:18: "clas" is a misspelling of "class"
core/src/test/scala/com/salesforce/op/stages/impl/insights/RecordInsightsCorrTest.scala:62:8: "predicitons" is a misspelling of "predictions"
core/src/test/scala/com/salesforce/op/stages/impl/insights/RecordInsightsCorrTest.scala:63:82: "predicitons" is a misspelling of "predictions"
core/src/test/scala/com/salesforce/op/stages/impl/insights/RecordInsightsCorrTest.scala:80:8: "predicitons" is a misspelling of "predictions"
core/src/test/scala/com/salesforce/op/stages/impl/insights/RecordInsightsCorrTest.scala:81:82: "predicitons" is a misspelling of "predictions"
docs/sources/templates/docs-index.gsp:6:12: "Documenation" is a misspelling of "Documentation"
features/src/main/scala/com/salesforce/op/stages/package.scala:78:100: "overriden" is a misspelling of "overridden"
features/src/main/scala/com/salesforce/op/utils/spark/OpVectorMetadata.scala:154:33: "overriden" is a misspelling of "overridden"
features/src/main/scala/org/apache/spark/ml/SparkMLSharedParamConstants.scala:55:35: "ouput" is a misspelling of "output"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:11:8: "Sandstrom" is a misspelling of "Sandstorm"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:204:9: "Youseff" is a misspelling of "Yousef"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:257:31: "Maybelle" is a misspelling of "Maybelline"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:395:9: "Sandstrom" is a misspelling of "Sandstorm"
templates/simple/spark.gradle:46:25: "compatability" is a misspelling of "compatibility"
test-data/PassengerDataAll.csv:11:8: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAll.csv:204:9: "Youseff" is a misspelling of "Yousef"
test-data/PassengerDataAll.csv:257:31: "Maybelle" is a misspelling of "Maybelline"
test-data/PassengerDataAll.csv:395:9: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAllWithHeader.csv:12:8: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAllWithHeader.csv:205:9: "Youseff" is a misspelling of "Yousef"
test-data/PassengerDataAllWithHeader.csv:258:31: "Maybelle" is a misspelling of "Maybelline"
test-data/PassengerDataAllWithHeader.csv:396:9: "Sandstrom" is a misspelling of "Sandstorm"
testkit/build/resources/main/cities.txt:63:0: "Capitola" is a misspelling of "Capital"
testkit/build/resources/main/lastnames.txt:4480:0: "VILLEGAS" is a misspelling of "VILLAGES"
testkit/src/main/resources/cities.txt:63:0: "Capitola" is a misspelling of "Capital"
testkit/src/main/resources/lastnames.txt:4480:0: "VILLEGAS" is a misspelling of "VILLAGES"
testkit/src/main/scala/com/salesforce/op/testkit/RandomStream.scala:259:17: "minimium" is a misspelling of "minimum"

after

$ misspell .
core/src/test/scala/com/salesforce/op/stages/impl/feature/TextTokenizerTest.scala:114:19: "comision" is a misspelling of "commission"
core/src/test/scala/com/salesforce/op/stages/impl/feature/TextTokenizerTest.scala:116:18: "clas" is a misspelling of "class"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:11:8: "Sandstrom" is a misspelling of "Sandstorm"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:204:9: "Youseff" is a misspelling of "Yousef"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:257:31: "Maybelle" is a misspelling of "Maybelline"
helloworld/src/main/resources/TitanicDataset/TitanicPassengersTrainData.csv:395:9: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAll.csv:11:8: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAll.csv:204:9: "Youseff" is a misspelling of "Yousef"
test-data/PassengerDataAll.csv:257:31: "Maybelle" is a misspelling of "Maybelline"
test-data/PassengerDataAll.csv:395:9: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAllWithHeader.csv:12:8: "Sandstrom" is a misspelling of "Sandstorm"
test-data/PassengerDataAllWithHeader.csv:205:9: "Youseff" is a misspelling of "Yousef"
test-data/PassengerDataAllWithHeader.csv:258:31: "Maybelle" is a misspelling of "Maybelline"
test-data/PassengerDataAllWithHeader.csv:396:9: "Sandstrom" is a misspelling of "Sandstorm"
testkit/build/resources/main/cities.txt:63:0: "Capitola" is a misspelling of "Capital"
testkit/build/resources/main/lastnames.txt:4480:0: "VILLEGAS" is a misspelling of "VILLAGES"
testkit/src/main/resources/cities.txt:63:0: "Capitola" is a misspelling of "Capital"
testkit/src/main/resources/lastnames.txt:4480:0: "VILLEGAS" is a misspelling of "VILLAGES"

Describe alternatives you've considered
None.

Additional context
None.

[salesforce-cla]

Thanks for the contribution! Before we can merge this, we need @seratch to sign the Salesforce.com Contributor License Agreement.

[tovbinm]

lgtm!

[codecov]

Codecov Report

Merging #66 into master will increase coverage by 0.48%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master      #66      +/-   ##
==========================================
+ Coverage   85.31%   85.79%   +0.48%     
==========================================
  Files         298      298              
  Lines        9004     9760     +756     
  Branches      299      535     +236     
==========================================
+ Hits         7682     8374     +692     
- Misses       1322     1386      +64

Impacted Files	Coverage Δ
...ssification/OpMultilayerPerceptronClassifier.scala	63.63% <ø> (ø)	⬆️
...n/scala/com/salesforce/op/dsl/RichMapFeature.scala	84.21% <ø> (ø)	⬆️
...com/salesforce/op/evaluators/OpEvaluatorBase.scala	96.87% <ø> (ø)	⬆️
...e/op/stages/impl/feature/SmartTextVectorizer.scala	97.4% <ø> (ø)	⬆️
...p/stages/impl/feature/SmartTextMapVectorizer.scala	100% <ø> (ø)	⬆️
...tages/impl/preparators/SanityCheckerMetadata.scala	92.2% <ø> (ø)	⬆️
.../apache/spark/ml/SparkMLSharedParamConstants.scala	0% <ø> (ø)	⬆️
...scala/com/salesforce/op/testkit/RandomStream.scala	100% <ø> (+100%)	⬆️
.../main/scala/com/salesforce/op/stages/package.scala	33.33% <ø> (ø)	⬆️
...m/salesforce/op/utils/spark/OpVectorMetadata.scala	82.6% <ø> (ø)	⬆️
... and 32 more

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[seratch]

@tovbinm Thank you for very quickly merging this!

[tovbinm]

Thanks for contributing!