Update MD040/fenced-code-language to add language_only parameter to reject extra data in info string.

schema/.markdownlint.jsonc

@@ -209,7 +209,9 @@
   // MD040/fenced-code-language - Fenced code blocks should have a language specified
   "MD040": {
     // List of languages
-    "allowed_languages": []
+    "allowed_languages": [],
+    // Require language only
+    "language_only": false
   },
 
   // MD041/first-line-heading/first-line-h1 - First line in a file should be a top-level heading

schema/.markdownlint.yaml

@@ -191,6 +191,8 @@ MD039: true
 MD040:
   # List of languages
   allowed_languages: []
+  # Require language only
+  language_only: false
 
 # MD041/first-line-heading/first-line-h1 - First line in a file should be a top-level heading
 MD041:

schema/build-config-schema.js

@@ -356,6 +356,11 @@ for (const rule of rules) {
             "type": "string"
           },
           "default": []
+        },
+        "language_only": {
+          "description": "Require language only",
+          "type": "boolean",
+          "default": false
         }
       };
       break;

schema/markdownlint-config-schema.json

@@ -682,6 +682,11 @@
             "type": "string"
           },
           "default": []
+        },
+        "language_only": {
+          "description": "Require language only",
+          "type": "boolean",
+          "default": false
         }
       },
       "additionalProperties": false