Fix broken URLs in documentation

[nginx-aoife]

Proposed changes

Fix 2 broken URLs in Docs
Attached video shows locally built docs with the fix

Untitled19.mp4

Closes #ISSUE

Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

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please add a brief note that summarizes the change.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.79%. Comparing base (ad76033) to head (2f7c984).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2474      +/-   ##
==========================================
+ Coverage   88.76%   88.79%   +0.02%     
==========================================
  Files         100      100              
  Lines        7531     7531              
  Branches       50       50              
==========================================
+ Hits         6685     6687       +2     
+ Misses        789      788       -1     
+ Partials       57       56       -1     

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[sjberman]

Thanks @nginx-aoife, once this is merged, let's cherry-pick to the release-1.4 branch and then we can publish it to the public docs.

[nginx-aoife]

@sjberman I don't have merge permissions (yet) on this repo. Can you merge it?