Bump pymdown-extensions from 9.7 to 10.0 in /docs

Bumps [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) from 9.7 to 10.0.
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@9.7...10.0)

---
updated-dependencies:
- dependency-name: pymdown-extensions
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

docs/requirements.txt

@@ -37,7 +37,7 @@ pre-commit==2.20.0
 prompt-toolkit==3.0.30
 py==1.11.0
 pygments==2.13.0
-pymdown-extensions==9.7
+pymdown-extensions==10.0
 pyparsing==3.0.9
 pytest==6.2.5
 pytest-cases==3.6.11