Add minimum and maximum values for DomainRecord's weight

Author: nmelehan

openapi.yaml

@@ -13797,6 +13797,8 @@ components:
           description: >
             The relative weight of this Record. Higher values are preferred.
           example: 50
+          minimum: 0
+          maximum: 65535
           x-linode-cli-display: 7
         port:
           type: integer