message: make title/description at least one character
diff: "properties": {
  "title": {
  "type": "string",
  - "description": "A unique and precise title of the API."
  + "description": "A unique and precise title of the API.",
  + "minLength": 1
  },
  "version": {
  "type": "string",
  - "description": "A semantic version number of the API."
  + "description": "A semantic version number of the API.",
  + "minLength": 1
  },
  "description": {
  "type": "string",
  