docs: Fix broken link in NAFF migration docs (#1402)

Author: silasary

docs/src/Guides/99 2.x Migration_NAFF.md

@@ -17,7 +17,7 @@ from interactions.ext import prefixed_commands
 client = Client(..., intents=Intents.GUILD_MESSAGES | ...)
 prefixed_commands.setup(client)
 ```
-From here it's more or less the same as before. You can find a guide on how to use prefixed commands [here](/Guides/26 Prefixed Commands.md).
+From here it's more or less the same as before. You can find a guide on how to use prefixed commands [here](/Guides/26 Prefixed Commands/).
 
 ## Hybrid Commands
 For now, hybrid commands are not supported, but they will be in the future.