doc: updates to library generation guide

[scotthart]

No description provided.

[gemini-code-assist]

Code Review

This pull request updates the contributor guide for adding generated libraries by simplifying the instructions on updating the googleapis SHA and refining the shell command used to find .proto files. The review feedback points out that the sed pattern in the updated shell command fails to match the directory path containing a + character, and suggests a robust regex pattern to handle both Bzlmod and legacy workspace layouts.

[gemini-code-assist]

The sed pattern .*/external/googleapis/ will not match the paths generated by the find command because the directory name contains a + (i.e., external/googleapis+). As a result, the prefix will not be stripped.

Using googleapis[^/]*/ instead will robustly handle both Bzlmod (googleapis+ or googleapis~) and legacy workspace layouts.

Suggested change

	xargs -0 grep -l '^service' | sed 's|.*/external/googleapis/||' | sort
	xargs -0 grep -l '^service' | sed 's|.*/external/googleapis[^/]*/||' | sort

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.30%. Comparing base (842dfb2) to head (a1dccb9).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16305      +/-   ##
==========================================
- Coverage   92.30%   92.30%   -0.01%     
==========================================
  Files        2223     2223              
  Lines      208177   208177              
==========================================
- Hits       192165   192158       -7     
- Misses      16012    16019       +7     

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[colinmoy]

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