message: Fix Pets.json samples
diff: {
  - "swagger": "3.0",
  + "swagger": "2.0",
  "info": {
  "title": "Pet Client",
  - "description": "Example service client that also manages pets"
  + "description": "Example service client that also manages pets",
  + "version": "2.0"
  },
  "host": "localhost:3000",
  - "schemes": [
  - "http"
  - ],
  - "consumes": [
  - "application/json"
  - ],
  - "produces": [
  - "application/json"
  - ],
  + "schemes": ["http"],
  + "consumes": ["application/json"],
  + "produces": ["application/json"],
  "paths": {
  "/pets": {
  "get": {
  },
  "Dog": {
  "type": "object",
  - "required": [
  - "name"
  - ],
  + "required": ["name"],
  "properties": {
  "name": {
  "type": "string",
  