Clarify ExplanationRequestSerializer help_text (to be reverted)

Author: mabashian

ansible_ai_connect/ai/api/serializers.py

@@ -455,9 +455,7 @@ class ExplanationRequestSerializer(Metadata):
         format="hex_verbose",
         required=False,
         label="Explanation ID",
-        help_text=(
-            "A UUID that identifies the particular explanation data is being requested for."
-        ),
+        help_text=("A unique identifier (UUID) for the explanation request."),
         default=None,
     )
     model = serializers.CharField(required=False, allow_blank=True, default="")