fix: e2e_tests docker compose version

Signed-off-by: Haoyu Sun <hasun@redhat.com>

Author: raptorsun

.github/workflows/e2e_tests.yaml

@@ -239,7 +239,7 @@ jobs:
           echo "OPENAI_API_KEY is set: $([ -n "$OPENAI_API_KEY" ] && echo 'YES' || echo 'NO')"
           echo "OPENAI_API_KEY length: ${#OPENAI_API_KEY}"
           
-          docker compose --version
+          docker compose version
           docker compose up -d
 
       - name: Wait for services