Add lint markdown (#19)

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Lint
+
+on:
+  pull_request:
+
+  push:
+
+jobs:
+  markdown:
+    name: Markdown
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout repository"
+        uses: "actions/checkout@v4"
+
+      - name: "Lint markdown"
+        uses: DavidAnson/markdownlint-cli2-action@v16

.markdownlint.jsonc

@@ -0,0 +1,54 @@
+{
+    "code-block-style": {
+        "style": "fenced"
+    },
+    "code-fence-style": {
+        "style": "backtick"
+    },
+    "emphasis-style": {
+        "style": "asterisk"
+    },
+    "fenced-code-language": {
+        "allowed_languages": [
+            "powershell",
+            "text"
+        ],
+        "language_only": true
+    },
+    "heading-style": {
+        "style": "atx"
+    },
+    "hr-style": {
+        "style": "---"
+    },
+    "line-length": {
+        "strict": true,
+        "code_blocks": false
+    },
+    "link-image-style": {
+        "collapsed": false,
+        "url_inline": false
+    },
+    "no-duplicate-heading": {
+        "siblings_only": true
+    },
+    "ol-prefix": {
+        "style": "ordered"
+    },
+    "proper-names": {
+        "code_blocks": false,
+        "names": [
+            "PowerShell",
+            "AnyPackage"
+        ]
+    },
+    "reference-links-images": {
+        "shortcut_syntax": true
+    },
+    "strong-style": {
+        "style": "asterisk"
+    },
+    "ul-style": {
+        "style": "dash"
+    }
+}