feat: use go tool

node_modules/markdownlint/doc/md003.md

@@ -0,0 +1,59 @@
+# `MD003` - Heading style
+
+Tags: `headings`
+
+Aliases: `heading-style`
+
+Parameters:
+
+- `style`: Heading style (`string`, default `consistent`, values `atx` /
+  `atx_closed` / `consistent` / `setext` / `setext_with_atx` /
+  `setext_with_atx_closed`)
+
+This rule is triggered when different heading styles are used in the same
+document:
+
+```markdown
+# ATX style H1
+
+## Closed ATX style H2 ##
+
+Setext style H1
+===============
+```
+
+To fix the issue, use consistent heading styles throughout the document:
+
+```markdown
+# ATX style H1
+
+## ATX style H2
+```
+
+The `setext_with_atx` and `setext_with_atx_closed` settings allow ATX-style
+headings of level 3 or more in documents with setext-style headings (which only
+support level 1 and 2 headings):
+
+```markdown
+Setext style H1
+===============
+
+Setext style H2
+---------------
+
+### ATX style H3
+```
+
+Note: The configured heading style can be a specific style to require (`atx`,
+`atx_closed`, `setext`, `setext_with_atx`, `setext_with_atx_closed`), or can
+require that all heading styles match the first heading style via `consistent`.
+
+Note: The placement of a horizontal rule directly below a line of text can
+trigger this rule by turning that text into a level 2 setext-style heading:
+
+```markdown
+A line of text followed by a horizontal rule becomes a heading
+---
+```
+
+Rationale: Consistent formatting makes it easier to understand a document.