chore: change pr template and commit message specific link

[zhouxinyong]

Before submitting a pull request, please make sure the following is done...

• Ensure the pull request title and commit message follow the Commit Specific in English.
• Fork the repo and create your branch from master or formily_next.
• If you've added code that should be tested, add tests!
• If you've changed APIs, update the documentation.
• Ensure the test suite passes (npm test).
• Make sure your code lints (npm run lint) - we've done our best to make sure these rules match our internal linting guidelines.

Please do not delete the above content

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What have you changed?

change pr template and commit message specific link， avoid 404.

[codecov]

Codecov Report

Merging #2742 (8b4e2d6) into formily_next (36d377c) will not change coverage.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           formily_next    #2742   +/-   ##
=============================================
  Coverage         95.77%   95.77%           
=============================================
  Files               145      145           
  Lines              6398     6398           
  Branches           1708     1708           
=============================================
  Hits               6128     6128           
  Misses              270      270           

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