Clean up temporary files and add Docker hooks documentation

- Remove temporary documentation files and unused wrapper scripts
- Update README.md with comprehensive Docker hooks documentation
- Update example config to use stable release version
- Maintain backward compatibility - all original hooks unchanged

Author: actuarysailor

.pre-commit-config-docker-example.yaml

@@ -3,7 +3,7 @@
 
 repos:
 - repo: https://github.com/actuarysailor/pre-commit-terraform
-  rev: feat/use-docker-pre-commit  # Use your branch with Docker hooks
+  rev: v1.96.1  # Use a stable release version
   hooks:
     # Option 1: Use Docker-based hooks (no local tool installation required)
     # These require the pre-commit-terraform-tools Docker image