chore: Refine device verification UI section wording

Author: unatasha8

docs/oauth2-oidc/device-authorization.mdx

@@ -85,9 +85,9 @@ Depending on your security needs and your traffic load, you may wish to enhance
 
 Keep in mind that higher entropy may make it harder for the user to enter the user code.
 
-## Device verification user interface implementation
+## Device verification UI implementation
 
-Here is a sample implementation for a device verification UI :
+Here is a sample UI implementation for device verification:
 
 ```js
 import { Configuration, OAuth2Api } from "@ory/client"