Add a CallOut in shipping v1 api doc to use Shipping V2 API doc

models/shipping-api-model/shipping.json

@@ -1,7 +1,7 @@
 {
   "swagger": "2.0",
   "info": {
-    "description": "Provides programmatic access to Amazon Shipping APIs.",
+    "description": "Provides programmatic access to Amazon Shipping APIs.\n\n **Note:** If you are new to the Amazon Shipping API, refer to the latest version of <a href=\"https://developer-docs.amazon.com/amazon-shipping/docs/shipping-api-v2-reference\">Amazon Shipping API (v2)</a> on the <a href=\"https://developer-docs.amazon.com/amazon-shipping/\">Amazon Shipping Developer Documentation</a> site.",
     "version": "v1",
     "title": "Selling Partner API for Shipping",
     "contact": {
@@ -29,7 +29,7 @@
         "tags": [
           "shipping"
         ],
-        "description": "Create a new shipment.\n\n**Usage Plan:**\n\n| Rate (requests per second) | Burst |\n| ---- | ---- |\n| 5 | 15 |\n\nFor more information, see \"Usage Plans and Rate Limits\" in the Selling Partner API documentation.",
+        "description": "Create a new shipment.\n\n**Usage Plan:**\n\n| Rate (requests per second) | Burst |\n| ---- | ---- |\n| 5 | 15 |\n\nThe `x-amzn-RateLimit-Limit` response header returns the usage plan rate limits that were applied to the requested operation, when available. The table above indicates the default rate and burst values for this operation. Selling partners whose business demands require higher throughput may see higher rate and burst values than those shown here. For more information, see [Usage Plans and Rate Limits in the Selling Partner API](doc:usage-plans-and-rate-limits-in-the-sp-api).",
         "operationId": "createShipment",
         "parameters": [
           {