Fix README.rst typo

[gwu]

scarpy -> scrapy

[codecov]

Codecov Report

Merging #222 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #222   +/-   ##
=======================================
  Coverage   92.67%   92.67%           
=======================================
  Files           9        9           
  Lines         587      587           
  Branches      118      118           
=======================================
  Hits          544      544           
  Misses         21       21           
  Partials       22       22

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[lopuhin]

Thanks for the catch @gwu 👍

[Gallaecio]

Since #192 already covers this change, plus some other fixes, and uses uppercase Scrapy, I think this pull request can be closed.