Fix typo

Author: srenon

composer.json

@@ -13,7 +13,7 @@
     ],
     "homepage": "http://www.magepal.com/",
     "support": {
-        "email": "support@magepal.org",
+        "email": "support@magepal.com",
         "issues": "https://github.com/magepal/magento2-form-field-manager/issues/"
     },
     "authors": [