pre-commit: enable prettier for markdown

.pre-commit-config.yaml

@@ -42,8 +42,9 @@ repos:
         args:
           - --profile=black
 
-  # # Autoformat: markdown, yaml (but not helm templates)
+  # Autoformat: markdown
-  # - repo: https://github.com/pre-commit/mirrors-prettier
+  - repo: https://github.com/pre-commit/mirrors-prettier
-  #   rev: v2.7.1
+    rev: v2.7.1
-  #   hooks:
+    hooks:
-  #     - id: prettier
+      - id: prettier
+        files: ".md"