chore: improve nesting error message (#2275)

* chore: improve subgroup limit error message

* Changelog

* style(pre-commit): auto fixes from pre-commit.com hooks

* Update discord/commands/core.py

Co-authored-by: Lala Sabathil <[email protected]>
Signed-off-by: Dorukyum <[email protected]>

* Update core.py

* style(pre-commit): auto fixes from pre-commit.com hooks

* Update CHANGELOG.md

* style(pre-commit): auto fixes from pre-commit.com hooks

---------

Signed-off-by: Dorukyum <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Lala Sabathil <[email protected]>

CHANGELOG.md

@@ -239,6 +239,8 @@ These changes are available on the `master` branch, but have not yet been releas
   ([#2170](https://github.com/Pycord-Development/pycord/pull/2170))
 - `BridgeOption` must now be used for arguments in bridge commands.
   ([#2252](https://github.com/Pycord-Development/pycord/pull/2252))
+- Changed the error message that appears when attempting to add a subcommand group to a
+  subcommand group. ([#2275](https://github.com/Pycord-Development/pycord/pull/2275))
 
 ### Removed
 

discord/commands/core.py

@@ -1425,8 +1425,7 @@ def create_subgroup(
         """
 
         if self.parent is not None:
-            # TODO: Improve this error message
-            raise Exception("a subgroup cannot have a subgroup")
+            raise Exception("A subcommand group cannot be added to a subcommand group")
 
         sub_command_group = SlashCommandGroup(
             name, description, guild_ids, parent=self, **kwargs