Add markdownlint with pre-commit (#9078)

https://github.com/DavidAnson/markdownlint/tree/main?tab=readme-ov-file#rules--aliases

https://github.com/igorshubovych/markdownlint-cli?tab=readme-ov-file#use-with-pre-commit

.github/linters/.markdown-lint.yml

@@ -0,0 +1,100 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# MD001/heading-increment Heading levels should only increment by one level at a time
+MD001: false
+
+# MD003/heading-style Heading style
+MD003: false
+
+# MD004/ul-style Unordered list style
+MD004: false
+
+# MD007/ul-indent Unordered list indentation
+MD007: false
+
+# MD009/no-trailing-spaces Trailing spaces
+MD009: false
+
+# MD010/no-hard-tabs Hard tabs
+MD010: false
+
+# MD012/no-multiple-blanks Multiple consecutive blank lines
+MD012: false
+
+# MD013/line-length Line length
+MD013: false
+
+# MD014/commands-show-output Dollar signs used before commands without showing output
+MD014: false
+
+# MD018/no-missing-space-atx No space after hash on atx style heading
+MD018: false
+
+# MD019/no-multiple-space-atx Multiple spaces after hash on atx style heading
+MD019: false
+
+# MD022/blanks-around-headings Headings should be surrounded by blank lines
+MD022: false
+
+# MD023/heading-start-left Headings must start at the beginning of the line
+MD023: false
+
+# MD024/no-duplicate-heading Multiple headings with the same content
+MD024: false
+
+# MD025/single-title/single-h1 Multiple top-level headings in the same document
+MD025: false
+
+# MD026/no-trailing-punctuation Trailing punctuation in heading
+MD026: false
+
+# MD028/no-blanks-blockquote Blank line inside blockquote
+MD028: false
+
+# MD029/ol-prefix Ordered list item prefix
+MD029: false
+
+# MD031/blanks-around-fences Fenced code blocks should be surrounded by blank lines
+MD031: false
+
+# MD032/blanks-around-lists Lists should be surrounded by blank lines
+MD032: false
+
+# MD033/no-inline-html Inline HTML
+MD033: false
+
+# MD034/no-bare-urls Bare URL used
+MD034: false
+
+# MD036/no-emphasis-as-heading Emphasis used instead of a heading
+MD036: false
+
+# MD037/no-space-in-emphasis Spaces inside emphasis markers
+MD037: false
+
+# MD040/fenced-code-language Fenced code blocks should have a language specified
+MD040: false
+
+# MD041/first-line-heading/first-line-h1 First line in a file should be a top-level heading
+MD041: false
+
+# MD046/code-block-style Code block style
+MD046: false
+
+# MD052/reference-links-images Reference links and images should use a label that is defined
+MD052: false

.pre-commit-config.yaml

@@ -75,3 +75,12 @@ repos:
         ^scripts/vm/hypervisor/xenserver/vmopspremium$|
         ^setup/bindir/cloud-setup-encryption\.in$|
         ^venv/.*$
+  - repo: https://github.com/igorshubovych/markdownlint-cli
+    rev: v0.40.0
+    hooks:
+      - id: markdownlint
+        name: run markdownlint
+        description: check Markdown files with markdownlint
+        args: [--config=.github/linters/.markdown-lint.yml]
+        types: [markdown]
+        files: \.(md|mdown|markdown)$