Bump mdformat-mkdocs[recommended] from 3.0.0 to 3.1.1

Bumps [mdformat-mkdocs[recommended]](https://github.com/kyleking/mdformat-mkdocs) from 3.0.0 to 3.1.1.
- [Release notes](https://github.com/kyleking/mdformat-mkdocs/releases)
- [Commits](KyleKing/mdformat-mkdocs@v3.0.0...v3.1.1)

---
updated-dependencies:
- dependency-name: mdformat-mkdocs[recommended]
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -6,7 +6,7 @@ mkdocs-redirects==1.2.2
 pymdown-extensions==10.12
 mkdocs-linkcheck==1.0.6
 mdformat-gfm==0.3.7
-mdformat-mkdocs[recommended]==3.0.0
+mdformat-mkdocs[recommended]==3.1.1
 beautifulsoup4==4.12.3
 diskcache==5.6.3
 sendgrid==6.11.0