fix mistakes (#161)

Co-authored-by: Nicki Nixon <[email protected]>

Author: nickitza

openapi/mx_platform_api.yml

@@ -613,13 +613,13 @@ components:
           nullable: true
           type: integer
         premium_amount:
-          example: "3900"
+          example: 3900
           nullable: true
-          type: string
+          type: number
         property_type:
-          example: 1
+          example: "VEHICLE"
           nullable: true
-          type: integer
+          type: string
         routing_number:
           example: "68899990000000"
           nullable: true