XamarinCommunityToolkit/.github/PULL_REQUEST_TEMPLATE.md

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### Description of Bug ###

<!-- Describe your changes here that fix the bug. -->

### Issues Fixed ###
<!-- Provide links to issues here. Ensure that a GitHub issue was created for your feature or bug fix before sending PR. -->

- Fixes #

### Behavioral Changes ###

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### PR Checklist ###
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- [ ] Has a linked Issue, and the Issue has been `approved`
- [ ] Has tests (if omitted, state reason in description)
- [ ] Has samples (if omitted, state reason in description)
- [ ] Rebased on top of main at time of PR
- [ ] Changes adhere to coding standard
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- [ ] Updated [documentation](https://github.com/MicrosoftDocs/xamarin-communitytoolkit)