Update migrate.json

Taking comments

Author: shsingla

specification/migrate/resource-manager/Microsoft.Migrate/stable/2019-10-01/migrate.json

@@ -1794,6 +1794,9 @@
           "items": {
             "$ref": "#/definitions/Project"
           }
+        },
+        "nextLink": {
+          "type": "string"
         }
       }
     },
@@ -2203,7 +2206,7 @@
           }
         },
         "x-ms-pageable": {
-          "nextLinkName": null
+          "nextLinkName": "nextLink"
         },
         "x-ms-examples": {
           "Projects_List": {
@@ -2249,7 +2252,7 @@
           }
         },
         "x-ms-pageable": {
-          "nextLinkName": null
+          "nextLinkName": "nextLink"
         },
         "x-ms-examples": {
           "Projects_List": {