update CAA tag type to Enum

jamesottinger · jamesottinger · commit 464312c60b7c · 2017-11-01T13:07:21.000-04:00
diff --git a/docs/src/data/endpoints/domains.yaml b/docs/src/data/endpoints/domains.yaml
@@ -240,7 +240,7 @@ endpoints:
             description: >
               The tag attribute for a CAA record. One of issue, issuewild,
               iodef. Ignored on other record types.
-            type: String
+            type: Enum
           ttl:
             optional: true
             description: >
