Fixed JSON parse error in schema.json (#7152)

Author: mschoettle

docs/schema.json

@@ -97,7 +97,7 @@
       "type": "array",
       "items": {
         "title": "Path to JavaScript file (may be local or absolute URL to external JS)",
-        "markdownDescription": "https://squidfunk.github.io/mkdocs-material/customization/#additional-javascript",
+        "markdownDescription": "https://squidfunk.github.io/mkdocs-material/customization/#additional-javascript"
       },
       "uniqueItems": true,
       "minItems": 1