fix: Update en.yml

Author: natsuki615

config/locales/en.yml

@@ -159,12 +159,12 @@ en:
   flash:
     actions:
       create:
-        notice: %{resource_name} was successfully created
+        notice: '%{resource_name} was successfully created'
       update:
-        notice: %{resource_name} was successfully updated
+        notice: '%{resource_name} was successfully updated'
       destroy:
-        notice: %{resource_name} was successfully deleted
-        alert: %{resource_name} could not be deleted
+        notice: '%{resource_name} was successfully deleted'
+        alert: '%{resource_name} could not be deleted'
     charges:
       approve:
         notice: Charge was successfully approved/un-approved