(DOCSP-30676) Update relnotes for orgID (#1368)

* (DOCSP-30676) Update relnotes for orgID

* Edits for a review, ready to merge

Author: JuliaMongo

source/release-notes.txt

@@ -103,7 +103,7 @@ New Images
 
 *Released 2023-06-07*
 
-.. warning:: **Upgrade to |k8s-op-short| 1.20.1**
+.. warning:: **Upgrade to 1.20.1**
 
    This release (1.20.0) is tied to a broken release on the Openshift Marketplace.
    Don't upgrade to 1.20.0, and instead upgrade to the 1.20.1 release.
@@ -128,7 +128,9 @@ Breaking Changes
 
 Makes the ``data.orgId`` field required for the ConfigMap of the |k8s-mdbrscs|.
 If you provide an empty ``orgId``,  as in: ``orgId = ""``, |onprem|
-creates an organization with the project name.
+creates an organization with the project name. Before upgrading the
+|k8s-op-short| to 1.19.1, set the ``orgId:""`` in the |onprem| ConfigMap
+and reapply it.
 
 Improvements
 ````````````