add repository

Author: Yuangwang

packages/@apphosting/experimental/adapter-astro/package.json

@@ -10,6 +10,10 @@
       ".": "./dist/index.js",
       "./package.json": "./package.json"
     },
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/FirebaseExtended/firebase-framework-tools.git"
+      },
     "files": [
       "dist"
     ],