fix(@schematics/schematics): use correct collection.json path

packages/schematics/schematics/schematic/files/src/collection.json

@@ -5,7 +5,7 @@
 // We read package.json using a require() call, which is standard JSON.
 {
   // This is just to indicate to your IDE that there is a schema for collection.json.
-  "$schema": "./node_modules/@angular-devkit/schematics/collection-schema.json",
+  "$schema": "../node_modules/@angular-devkit/schematics/collection-schema.json",
 
   // Schematics are listed as a map of schematicName => schematicDescription.
   // Each description contains a description field which is required, a factory reference,