chore: update author name in package.json

Author: amillez

package.json

@@ -56,7 +56,7 @@
         "type": "git",
         "url": "https://github.com/amillez/react-native-cover.git"
     },
-    "author": "AgustinMJ",
+    "author": "amillez",
     "license": "MIT",
     "bugs": {
         "url": "https://github.com/amillez/react-native-cover/issues"