Fix broken links in examples

[bootstrapbill]

PR Description

Fix some broken links in the examples (closes #1315)

Merge checklist

Maintainer, please confirm the following before merging.
If applicable:

• All comments are resolved
• This is not your own PR
• All CIs are happy
• PR title starts with [MRG]
• whats_new.rst is updated
• New contributors have been added to CITATION.cff
• PR description includes phrase "closes <#issue-number>"

[welcome]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.46%. Comparing base (5bfb9b4) to head (50def25).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1316   +/-   ##
=======================================
  Coverage   97.46%   97.46%           
=======================================
  Files          40       40           
  Lines        8840     8840           
=======================================
  Hits         8616     8616           
  Misses        224      224           

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[welcome]

🎉 Congrats on merging your first pull request! 🥳 Looking forward to seeing more from you in the future! 💪

[drammock]

Thanks @bootstrapbill!