Annotate the config's Example 6 as obsolete for SR

The example 6 explains how to get details of which file is owned by whom
and it is only prolog specific option that is obsolete for submit
requirement. Explain that in SR part and link to an alternative.

Change-Id: I631e15c22ab2be0ea9064f65e786c755837a4fbf

owners/src/main/resources/Documentation/config.md

diff --git a/owners/src/main/resources/Documentation/config.md b/owners/src/main/resources/Documentation/config.md
index e8ae0eb..5aaaeab 100644
--- a/owners/src/main/resources/Documentation/config.md
+++ b/owners/src/main/resources/Documentation/config.md
@@ -418,7 +418,8 @@
 
 ### When `owners.enableSubmitRequirement = true`
 
-This case is not yet covered by the owners submit requirement implementation.
+This case is obsolete and _only_ prolog specific. The list of which file is
+owned by whom is available through the [REST API](rest-api.md).
 
 ### When `owners.enableSubmitRequirement = false` (default)