Fix yaml syntax

Author: orionpapadakis

.github/workflows/integrations/quarkus-langchain4j.yml

@@ -1,4 +1,4 @@
-name: [Integration] Quarkus-LangChain4j
+name: \[Integration\] Quarkus-LangChain4j
 
 on:
   # Temporarily disabled - manual trigger only
@@ -192,8 +192,8 @@ jobs:
           STREAMING_HTTP_RESPONSE_CODE="${STREAMING_RESPONSE: -3}"
           
           # Check response code
-          if [ "STREAMING_HTTP_RESPONSE_CODE" != "200" ]; then
-            echo "ERROR: Streaming endpoint returned HTTP code STREAMING_HTTP_RESPONSE_CODE"
+          if [ "$STREAMING_HTTP_RESPONSE_CODE" != "200" ]; then
+            echo "ERROR: Streaming endpoint returned HTTP code $STREAMING_HTTP_RESPONSE_CODE"
             exit 1
           else
             echo "Streaming endpoint HTTP code: ${STREAMING_RESPONSE: -3}"