Fix Docker container names in pre-commit hooks

The previous Docker container names contained Bash syntax, but
pre-commit interprets them as string literals, resulting in invalid
Docker container names. Remove Bash syntax, and replace it with string
literals.

CHANGELOG.md

@@ -8,7 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Note: Can be used with `oxsecurity/megalinter@beta` in your GitHub Action mega-linter.yml file, or with `oxsecurity/megalinter:beta` docker image
 
-- Fix invalid Docker container names in .pre-commit-hooks.yaml
+- Fix invalid Docker container names in .pre-commit-hooks.yaml ([#1932](https://github.com/oxsecurity/megalinter/issues/1932))
 
 - Linter versions upgrades
 <!-- linter-versions-end -->