Fix tests

Author: embhorn

.github/workflows/mqtt-sn-check.yml

@@ -87,7 +87,7 @@ jobs:
     # Cleanup
     - name: Stop gateway
       run: |
-      sudo kill -2 $(pgrep -f "MQTT-SNGateway")
+        sudo kill -2 $(pgrep -f "MQTT-SNGateway")
 
     # capture logs on failure
     - name: Show logs on failure