update generic error message

src/components/user_reporting_modal/user_reporting_modal.vue

@@ -90,6 +90,7 @@
 
     .alert {
       margin: 1em 0 0 0;
+      line-height: 1.3em;
     }
   }
 

src/i18n/en.json

@@ -460,7 +460,7 @@
     "forward_description": "The account is from another server. Send an anonymized copy of the report there as well?",
     "forward_to": "Forward to {0}",
     "submit": "Submit",
-    "generic_error": "An error occured processing your request."
+    "generic_error": "An error occurred while processing your request."
   },
   "who_to_follow": {
     "more": "More",