chore: improve pull request template notes

[WilliamBergamin]

Summary

Testing

Special notes

Requirements

• [ ] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [ ] I've read and agree to the Code of Conduct.
• [ ] I've ran deno task test after making the changes.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.35%. Comparing base (de2ca5c) to head (dd4ea08).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #296 +/- ## ======================================= Coverage 98.35% 98.35% ======================================= Files 63 63 Lines 2552 2552 Branches 147 147 ======================================= Hits 2510 2510 Misses 42 42 ```

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