test: Ignore googletagmanager links during doctests

[nfelt14]

Proposed changes

This fixes issues with local tox runs by ignoring certain links in the built docs.

Types of changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
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• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• CI/CD update (an update to the CI/CD workflows, scripts, and/or configurations)
• Documentation update (an update to enhance the user experience when reading through the docs)

Checklist

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• I have followed the guidelines in the CONTRIBUTING document
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.59%. Comparing base (5df48e4) to head (bd67d76).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   90.59%   90.59%           
=======================================
  Files          28       28           
  Lines        1797     1797           
  Branches      274      274           
=======================================
  Hits         1628     1628           
  Misses        106      106           
  Partials       63       63           

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[github-actions]

Test Results (macos)

path	passed	subtotal
tests/test_tm_data_types.py	13	13
TOTAL	13	13

Link to workflow run

[github-actions]

Test Results (windows)

path	passed	subtotal
tests\test_tm_data_types.py	13	13
TOTAL	13	13

Link to workflow run

[github-actions]

Test Results (ubuntu)

path	passed	subtotal
tests/test_tm_data_types.py	13	13
TOTAL	13	13

Link to workflow run