message: Update PR Template.
diff: Hello! Thank you for opening a Pull Request! Killed by Google is hosted on Github pages.
  -If your changes affect the `src/` folder, please be sure to run the full lint, test and build and resolve any issues.
  -
  -Command:
  -
  - yarn test
  -
  -Commit any changes including any changes to `main.js`.
  +Be sure to read Contributing Guide to ensure your PR will pass Continuous Integration.
  -->
  