Bump pymdown-extensions from 10.14.3 to 10.16.1 in /docs (#1265)

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 10.14.3 to 10.16.1.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.14.3...10.16.1)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-version: 10.16.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -17,7 +17,7 @@ mkdocs-material==9.6.22
 mkdocs-material-extensions==1.3.1
 packaging==25.0
 Pygments==2.19.2
-pymdown-extensions==10.14.3
+pymdown-extensions==10.16.1
 pyparsing==3.2.5
 python-dateutil==2.9.0.post0
 PyYAML==6.0.2