Use mdformat instead of markdownlint and markdown-toc

.pre-commit-config.yaml

@@ -11,16 +11,20 @@ repos:
       - id: mixed-line-ending
       - id: check-yaml
 
-  - repo: https://github.com/igorshubovych/markdownlint-cli
-    rev: v0.34.0
+  - repo: https://github.com/executablebooks/mdformat
+    rev: 0.7.16
     hooks:
-      - id: markdownlint
-        entry: markdownlint --ignore .github/*.md
+      - id: mdformat
+        name: fix markdown formatting with mdformat
+        types: [markdown]
+        additional_dependencies:
+          - mdformat-gfm
+          - mdformat-toc
+          - mdformat-frontmatter
 
   - repo: https://github.com/trussworks/pre-commit-hooks
     rev: v1.1.1
     hooks:
-      - id: markdown-toc
       - id: mdspell
       - id: spelling-sort
 

README.md

@@ -1,18 +1,17 @@
 # Truss pre-commit hooks
 
-<!-- toc -->
-
-* [circleci-validate](#circleci-validate)
-* [gen-docs](#gen-docs)
-* [goreleaser-check](#goreleaser-check)
-* [markdown-toc](#markdown-toc)
-* [mdspell](#mdspell)
-* [spelling-sort](#spelling-sort)
-* [hadolint](#hadolint)
-
-<!-- Regenerate with "pre-commit run -a markdown-toc" -->
-
-<!-- tocstop -->
+<!-- mdformat-toc start --slug=github --no-anchors --maxlevel=3 --minlevel=1 -->
+
+- [Truss pre-commit hooks](#truss-pre-commit-hooks)
+  - [circleci-validate](#circleci-validate)
+  - [gen-docs](#gen-docs)
+  - [goreleaser-check](#goreleaser-check)
+  - [markdown-toc](#markdown-toc)
+  - [mdspell](#mdspell)
+  - [spelling-sort](#spelling-sort)
+  - [hadolint](#hadolint)
+
+<!-- mdformat-toc end -->
 
 ## circleci-validate