rename "apply" to "Apply Role" in sidebar

Author: uinstinct

docs/docs/customize/model-roles/apply.mdx

@@ -1,3 +1,10 @@
+---
+title: Apply Role
+description: Apply model role
+keywords: [apply, model, role]
+sidebar_position: 4
+---
+
 When editing code, Chat and Edit model output often doesn't clearly align with existing code. A model with the `apply` role is used to generate a more precise diff to apply changes to a file.
 
 ## Recommended Apply models