update docs

Author: CubeCrafter72

docs/epicachievements/configuration/01-achievements.mdx

@@ -169,7 +169,7 @@ conditions:
 ### `settings`
 Additional settings for the achievement.
 
-`toast-message`: Overrides the default toast message set in `config.yml`
+`toast-message`: Overrides the default toast message set in `config.yml` (Requires **[CrazyAdvancementsAPI](https://www.spigotmc.org/resources/51741/)**)
   - `icon`: The icon displayed in the toast.
   - `message`: The message displayed in the toast.
   - `type`: You can choose between `CHALLENGE`, `TASK` or `GOAL`.