fix: use official json schema

Author: HerringtonDarkholme

website/src/components/editors/monaco.ts

@@ -53,7 +53,7 @@ async function doSetup() {
     format: true,
     schemas: [
       {
-        uri: '/schema.json',
+        uri: 'https://raw.githubusercontent.com/ast-grep/ast-grep/refs/heads/main/schemas/rule.json',
         fileMatch: ['*'],
       },
     ],
@@ -67,4 +67,4 @@ function disableTypeScriptCheck(monaco: Monaco) {
     noSemanticValidation: true,
     noSyntaxValidation: false,
   })
-}
+}