fix(package): change the homepage link from testing to error

Author: sciborrudnicki

package.json

@@ -3,7 +3,7 @@
   "version": "1.0.1",
   "description": "Manages the callback function.",
   "author": "Angular Package <[email protected]> (https://wvvw.dev)",
-  "homepage": "https://github.com/angular-package/testing#readme",
+  "homepage": "https://github.com/angular-package/error#readme",
   "peerDependencies": {
     "@angular-package/type": "^4.2.0"
   },