chore: fix repository value in package.json

Author: acostalima

package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "main": "fetch.js",
   "author": "André Costa Lima <[email protected]> (https://github.com/acostalima/)",
-  "repository": "@react-native-community/fetch",
+  "repository": "react-native-community/fetch",
   "license": "MIT",
   "keywords": [
     "react-native",