correct volumes indentation

removed spaces to unindent volumes block from ports block

Portainer/docker-compose.yaml

@@ -7,9 +7,9 @@ services:
       - 8000:8000
       - 9443:9443
       - 9000:9000 # for http
-      volumes:
-        - portainer_data:/data
-        - /var/run/docker.sock:/var/run/docker.sock
+    volumes:
+      - portainer_data:/data
+      - /var/run/docker.sock:/var/run/docker.sock
     restart: unless-stopped
     networks:
       proxy: