Updated JSON schema (#7150)

Since mkdocs/mkdocs#92 for mkdocs/mkdocs#91, an extra_javascript item does not necessarily have to end in *.js; e.g. in enola-dev/enola#669 I have a extra_javascript: - https://unpkg.com/mustache@latest, which this flags up as wrong - although it's not (it works great); ergo it's better to remove this constraint.

Author: vorburger

docs/schema.json

@@ -96,9 +96,8 @@
       "markdownDescription": "https://squidfunk.github.io/mkdocs-material/customization/#additional-javascript",
       "type": "array",
       "items": {
-        "title": "Path to JavaScript file",
+        "title": "Path to JavaScript file (may be local or absolute URL to external JS)",
         "markdownDescription": "https://squidfunk.github.io/mkdocs-material/customization/#additional-javascript",
-        "pattern": "\\.m?js($|\\?)"
       },
       "uniqueItems": true,
       "minItems": 1