Update gptoss-20b-vllm-g5.yaml

Author: tohwsw

genai-examples/gptoss-20b-vllm-g5.yaml

@@ -32,6 +32,7 @@ spec:
           - "--port=8000"
           - "--trust-remote-code"
           - "--max-model-len=2048"
+          - "--max-num-seqs=2"
           - "--tensor-parallel-size=1"
           - "--enable-auto-tool-choice"
           - --tool-call-parser=openai