Add markdownlint and doctoc to pre-commit

Author: replaceafill

.markdownlint.jsonc

@@ -0,0 +1,10 @@
+{
+  "default": true,
+  "MD010": {
+    "code_blocks": false
+  },
+  "MD013": {
+    "code_blocks": false,
+    "tables": false
+  }
+}

.pre-commit-config.yaml

@@ -21,3 +21,19 @@ repos:
     additional_dependencies:
     - flake8-bugbear==23.9.16
     - flake8-comprehensions==3.14.0
+- repo: https://github.com/igorshubovych/markdownlint-cli
+  rev: v0.37.0
+  hooks:
+  - id: markdownlint
+    exclude: |
+      (?x)^(
+        ISSUE_TEMPLATE\.md
+      )
+- repo: https://github.com/thlorenz/doctoc
+  rev: v2.2.0
+  hooks:
+  - id: doctoc
+    files: |
+      (?x)^(
+        README\.md
+      )