fix: simplify docstring for Member.voice property

Author: Lumabots

discord/member.py

@@ -716,13 +716,7 @@ def guild_permissions(self) -> Permissions:
 
     @property
     def voice(self) -> VoiceState | None:
-        """Returns the member's current voice state.
-
-        Returns
-        -------
-        Optional[:class:`VoiceState`]
-            The member's voice state or ``None`` if the member is not in a voice channel.
-        """
+        """Optional[:class:`VoiceState`]: Return the member's current voice state."""
         return self.guild._voice_state_for(self._user.id)
 
     @property