Doc NotFoundHandler usage in minimal http example

[TheTeaCat]

Describe your changes

Docs NotFoundHandler usage in minimal http example

Issue ticket number and link

https://firetail-io.atlassian.net/browse/FIRE-2767

Checklist before requesting a review

• I have resolved any merge conflicts
• I have run tests locally and they pass
• I have linted and auto-formatted the code
• If there is new or changed functionality, I have added/updated the tests
• If there is new or changed functionality, I have added/updated the documentation

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.21%. Comparing base (efde6ca) to head (7ec7e6c).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #41   +/-   ##
=======================================
  Coverage   83.21%   83.21%           
=======================================
  Files           8        8           
  Lines         560      560           
=======================================
  Hits          466      466           
  Misses         80       80           
  Partials       14       14           

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