Edit existing Tags?

Is there a way to edit existing tags?

@BlackForestBoi I’ve asked this question a few month ago and since then I forgot about it as I haven’t received any reply for that.
Today, I still have the same question!! Is there a way to edit existing tags?

Has anyone figured out a way to delete tags out of their list of tags? At firs, I was writing my tags with _ (underscores) between words. And that became cumbersome. So I made the same tags with spaces. Now every time I go to tag something and the list shows up, I can see the old tags with the underscores.