gh gist edit
Edit one of your gists
gh gist edit {<id> | <url>} [<filename>] [flags]
Options
-a,--add <string>- Add a new file to the gist
-d,--desc <string>- New description for the gist
-f,--filename <string>- Select a file to edit
-r,--remove <string>- Remove a file from the gist