fix git repo url

Author: hsubox76

packages/vertexai/package.json

@@ -61,7 +61,7 @@
   "repository": {
     "directory": "packages/vertexai",
     "type": "git",
-    "url": "https://github.com/firebase/firebase-js-sdk.git"
+    "url": "git+https://github.com/firebase/firebase-js-sdk.git"
   },
   "bugs": {
     "url": "https://github.com/firebase/firebase-js-sdk/issues"
@@ -73,4 +73,4 @@
     ],
     "reportDir": "./coverage/node"
   }
-}
+}