Escape `<` and `>` in docstrings

[codecov[bot]]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (dfb1879) 86.24% compared to head (4bd80a0) 86.19%.

Files	Patch %	Lines
src/mkapi/pages.py	21.42%	11 Missing :warning:
src/mkapi/plugins.py	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #75 +/- ## ========================================== - Coverage 86.24% 86.19% -0.06% ========================================== Files 14 14 Lines 2138 2151 +13 ========================================== + Hits 1844 1854 +10 - Misses 294 297 +3 ```

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