Fix JSON Return Format in getReqData Function (#145)

The getReqData function was incorrectly returning a tuple containing a dictionary, which is not a valid JSON format.

evals/benchmark/stresscli/locust/retrieverfixed.py

@@ -783,7 +783,7 @@ def getUrl():
 
 
 def getReqData():
-    return ({"text": my_query, "embedding": my_embedding},)
+    return {"text": my_query, "embedding": my_embedding}
 
 
 def respStatics(environment, reqData, resp):