Add doc URL to profile format and use it display help link.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 54.16667% with 11 lines in your changes missing coverage. Please review.

Project coverage is 67.22%. Comparing base (0ed6a68) to head (e59841d). Report is 33 commits behind head on main.

Files	Patch %	Lines
internal/report/report.go	0.00%	11 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #886 +/- ## ========================================== + Coverage 66.86% 67.22% +0.35% ========================================== Files 44 44 Lines 9824 9822 -2 ========================================== + Hits 6569 6603 +34 + Misses 2794 2772 -22 + Partials 461 447 -14 ```

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[ghemawat]

Will create new PR