update user_guid

site/content/user_guide.md

@@ -525,7 +525,7 @@ around it. In fact, you can provide your own if you want.
 
 Cobra supports grouping of available commands in the help output.  To group commands, each group must be explicitly
 defined using `AddGroup()` on the parent command.  Then a subcommand can be added to a group using the `GroupID` element
-of that subcommand. The groups will appear in the help output in the same order as they are defined using different
+of that subcommand. `RemoveGroup()` can be used to remove groups and initialize the GroupID of commands belonging to the removed group. The groups will appear in the help output in the same order as they are defined using different
 calls to `AddGroup()`.  If you use the generated `help` or `completion` commands, you can set their group ids using
 `SetHelpCommandGroupId()` and `SetCompletionCommandGroupId()` on the root command, respectively.