UPDATE: Fixed broken examples links

[swiecki]

Fixed the two broken links in the examples page. All other links confirmed to work.

Why are these changes needed?

Related issue number

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[qingyun-wu]

Thanks for fixing these!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 36.10%. Comparing base (195033e) to head (15fa700).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1886      +/-   ##
==========================================
+ Coverage   36.07%   36.10%   +0.02%     
==========================================
  Files          63       63              
  Lines        6652     6658       +6     
  Branches     1469     1470       +1     
==========================================
+ Hits         2400     2404       +4     
- Misses       4055     4056       +1     
- Partials      197      198       +1     

Flag	Coverage Δ
unittests	36.10% <ø> (+0.02%)	⬆️

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