LDAP: Update the documentation

Any service implementing xyz.openbmc_project.User.Ldap.Config interface
on one or more objects must implement xyz.openbmc_project.Object.Enable
interface on the object. It was missing in the earlier interface description.

Change-Id: I58f767392515612b6f4d8c99bca74758406c8461
Signed-off-by: Ratan Gupta <ratagupt@linux.vnet.ibm.com>
diff --git a/xyz/openbmc_project/User/Ldap/Config.interface.yaml b/xyz/openbmc_project/User/Ldap/Config.interface.yaml
index 227760a..28c76b8 100644
--- a/xyz/openbmc_project/User/Ldap/Config.interface.yaml
+++ b/xyz/openbmc_project/User/Ldap/Config.interface.yaml
@@ -1,5 +1,7 @@
 description: >
     Implement to update LDAP mandatory properties.
+    Any service implementing User.Ldap.Config interface on one or more
+    objects must implement Object.Enable interface on the object.
 
 properties:
     - name: LDAPServerURI