fix type knowledge_base_config

Author: anafalcao

examples/event_handler_bedrock_agents/src/bedrockresponse.py

@@ -7,8 +7,12 @@
     body={"message": "Hello from Bedrock!"},
     session_attributes={"user_id": "123"},
     prompt_session_attributes={"context": "testing"},
-    knowledge_bases_configuration={
-        "knowledgeBaseId": "kb-123",
-        "retrievalConfiguration": {"vectorSearchConfiguration": {"numberOfResults": 3, "overrideSearchType": "HYBRID"}},
-    },
+    knowledge_bases_configuration=[
+        {
+            "knowledgeBaseId": "kb-123",
+            "retrievalConfiguration": {
+                "vectorSearchConfiguration": {"numberOfResults": 3, "overrideSearchType": "HYBRID"},
+            },
+        },
+    ],
 )