Render code snippet in issue ticket as python

[rly]

Motivation

• Minor: Render(colorize) code snippet in issue ticket as python instead of shell.

Checklist

• Did you update CHANGELOG.md with your changes?
• Does the PR clearly describe the problem and the solution?
• Have you reviewed our Contributing Guide?
• Does the PR use "Fix #XXX" notation to tell GitHub to close the relevant issue numbered XXX when the PR is merged?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.38%. Comparing base (4bdf39d) to head (2076ff3).
Report is 75 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1024   +/-   ##
=======================================
  Coverage   88.38%   88.38%           
=======================================
  Files          45       45           
  Lines        9565     9565           
  Branches     2720     2720           
=======================================
  Hits         8454     8454           
  Misses        784      784           
  Partials      327      327           

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