Question about updating a Topic

[spark]

This is more of forum question, but when I update my story, how do I update the topic so you can tell there is an update.  I can't find the update tool.

[DailyDi]

1 hour ago, spark said:

This is more of forum question, but when I update my story, how do I update the topic so you can tell there is an update.  I can't find the update tool.

Edit the original post and you should be able to edit the topic