Removed content_regex_list example from documentation

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.55%. Comparing base (be86a49) to head (b1b04db). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #630 +/- ## ========================================== - Coverage 69.70% 69.55% -0.15% ========================================== Files 9 9 Lines 769 762 -7 ========================================== - Hits 536 530 -6 + Misses 233 232 -1 ```

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