chore(deps): update docker.io/library/rockylinux docker tag to v9

.markdownlint.yaml

@@ -68,6 +68,11 @@ MD022:
   # Blank lines below heading
   lines_below: 1
 
+# MD024/no-duplicate-heading/no-duplicate-header - Multiple headings with the same content
+MD024:
+  # Only check sibling headings
+  allow_different_nesting: true
+
 # MD025/single-title/single-h1 - Multiple top-level headings in the same document
 MD025:
   # Heading level
@@ -122,6 +127,7 @@ MD041:
 MD044:
   # List of proper names
   names: []
+  # - some-thing
   # Include code blocks
   code_blocks: false