docs: Correct "ignored categories" to "appeal categories"

ban_appeals/ban_appeals.py

@@ -240,7 +240,7 @@ async def get_categories(self, ctx: commands.Context) -> None:
     @checks.has_permissions(PermissionLevel.OWNER)
     @appeal_category_management.command(name="add")
     async def add_category(self, ctx: commands.Context, appeal_category: discord.CategoryChannel) -> None:
-        """Add a category to the list of ignored categories."""
+        """Add a category to the list of appeal categories."""
         if appeal_category.id in self.appeal_categories:
             await ctx.send(f":x: {appeal_category} already in the appeal category list.")
             return