doc: Highlight Python syntax in md files

[rmshaffer]

Issue #, if available:

Description of changes:
Follow-up to #43 - Python syntax highlighting in remaining .md files.

Testing done:

Merge Checklist

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (c917e31) to head (199af11).
Report is 14 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #44   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           49        49           
  Lines         2090      2090           
  Branches       345       345           
=========================================
  Hits          2090      2090           

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