Fix syntax

doctrine/doctrine-bundle/1.6/manifest.json

@@ -33,7 +33,8 @@
                 "    - db-data:/var/lib/postgresql/data:rw",
                 "    # You may use a bind-mounted host directory instead, so that it is harder to accidentally remove the volume and lose all your data!",
                 "    # - ./docker/db/data:/var/lib/postgresql/data:rw"
-            ]
+            ],
+            "volumes": ["db-data:"]
         },
         "docker-compose.override.yml": {
             "services": [
@@ -41,7 +42,6 @@
                 "  ports:",
                 "    - \"5432\""
             ]
-        },
-        "volumes": ["db-data:"]
+        }
     }
 }