ci: add missing repo url

Author: MatiasOS

packages/plugin/package.json

@@ -58,5 +58,9 @@
   },
   "publishConfig": {
     "access": "public"
-  }
+  },
+  "repository": {
+		"type": "git",
+		"url": "https://github.com/openscan-explorer/hardhat-plugin"
+	}
 }