Add check-readthedocs pre-commit hook (python#128453)

Author: sobolevn

.pre-commit-config.yaml

@@ -55,6 +55,7 @@ repos:
     hooks:
       - id: check-dependabot
       - id: check-github-workflows
+      - id: check-readthedocs
 
   - repo: https://github.com/rhysd/actionlint
     rev: v1.7.4