Set topK=1 for faqgenfixed

Signed-off-by: Wang, Kai Lawrence <kai.lawrence.wang@intel.com>

evals/benchmark/stresscli/locust/faqgenfixed.py

@@ -9,7 +9,11 @@ def getUrl():
 
 
 def getReqData():
-    return {"messages": "Text Embeddings Inference (TEI) is a toolkit for deploying and serving open source text embeddings and sequence classification models. TEI enables high-performance extraction for the most popular models, including FlagEmbedding, Ember, GTE and E6.", "max_tokens": 128}
+    return {
+        "messages": "Text Embeddings Inference (TEI) is a toolkit for deploying and serving open source text embeddings and sequence classification models. TEI enables high-performance extraction for the most popular models, including FlagEmbedding, Ember, GTE and E6.", 
+        "max_tokens": 128,
+        "top_k": 1,
+    }
 
 
 def respStatics(environment, reqData, respData):