Clarify Explanation ID description

Author: mabashian

tools/openapi-schema/ansible-ai-connect-service.json

@@ -1557,7 +1557,7 @@
                         "type": "string",
                         "format": "uuid",
                         "title": "Explanation ID",
-                        "description": "A UUID that identifies the particular explanation data is being requested for."
+                        "description": "A unique identifier (UUID) for the explanation request."
                     },
                     "model": {
                         "type": "string",

tools/openapi-schema/ansible-ai-connect-service.yaml

@@ -1015,8 +1015,7 @@ components:
           type: string
           format: uuid
           title: Explanation ID
-          description: A UUID that identifies the particular explanation data is being
-            requested for.
+          description: A unique identifier (UUID) for the explanation request.
         model:
           type: string
           default: ''