fix: correct yaml linting hook to call yaml-lint instead of markdown-lint (#609)

The pre-commit yaml-and-yml-fmt hook was incorrectly calling 'make markdown-lint'
instead of 'make yaml-lint', causing YAML files to not be properly linted locally
while GitHub Actions CI would catch the issues.

This led to confusion where PRs would fail in CI even though 'pre-commit run
--all-files' passed locally, forcing contributors to fix pre-existing YAML
linting issues in files they never touched (e.g., PR #593).

Fixes #608

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Signed-off-by: Yossi Ovadia <yovadia@redhat.com>
Co-authored-by: Claude <noreply@anthropic.com>

Author: yossiovadia

.pre-commit-config.yaml

@@ -54,7 +54,7 @@ repos:
     hooks:
       - id: yaml-and-yml-fmt
         name: yaml/yml fmt
-        entry: bash -c "make markdown-lint"
+        entry: bash -c "make yaml-lint"
         language: system
         files: \.(yaml|yml)$
         exclude: ^(\node_modules/)