Update PULL_REQUEST_TEMPLATE.md

.github/PULL_REQUEST_TEMPLATE.md

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 Hello! And thanks for contributing to Evergreen 🎉
 
 We appreciate the time you took to open this pull request.
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 Unfortunately, if we do not have enough information or the feature doesn't align with our roadmap, we might respectfully thank you for your time and close the issue.
 
 Please respect our [Code of Conduct](https://github.com/segmentio/evergreen/blob/master/.github/CODE_OF_CONDUCT.md).
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 **Overview**
 
-<!-- A clear description of the what and *why* of this code change. -->
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 **Screenshots (if applicable)**
 
-<!-- Please provide screenshots or gifs showing the change in action -->
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 **Documentation**
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-<!-- If your change impacts component behavior or usage please be sure to include appropriate documentation and types! -->
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 - [ ] Updated Typescript types and/or component PropTypes
 - [ ] Added / modified component docs
 - [ ] Added / modified Storybook stories