Fix syntax of JSON

software/kvm/instance-kvm-nbd-server-input-schema.json

@@ -2,6 +2,5 @@
   "type": "object",
   "$schema": "http://json-schema.org/draft-04/schema",
   "title": "Input Parameters For NDB Server",
-  "properties": {
-  }
+  "properties": {}
 }