Fix typo in CommandTree.fetch_command's NotFound doc

Author: wildanrfq

discord/app_commands/tree.py

@@ -162,7 +162,7 @@ async def fetch_command(self, command_id: int, /, *, guild: Optional[Snowflake]
         NotFound
             The application command was not found.
             This could also be because the command is a guild command
-            and the guild was not specified and vise versa.
+            and the guild was not specified and vice versa.
 
         Returns
         --------