Update IETF-RFC.md

Co-authored-by: Giuseppe Lo Presti <[email protected]>

Author: mickenordin

IETF-RFC.md

@@ -1576,7 +1576,7 @@ OCM Providers.
             |    (OCM Server)       |
             +-----------------------+
             | - apiVersion          |
-            | - enabled: bool       |
+            | - enabled             |
             | - endPoint            |
             | - inviteAcceptDialog  |
             | - provider            |