Removed one link and added already reviewed content to two more places where it had to be added but was missed (#612)

Author: JuliaMongo

source/includes/facts/fact-must-migrate-specified-appdb.rst

@@ -1,12 +1,11 @@
 Before upgrading your |k8s-op| to v1.11.0 or later,
-:ref:`Migrate the Application Database <migrate-to-ent-appdb-version>`
+migrate the Application Database
 of any deployed ``MongoDBOpsManager`` custom resources
 to one of the supported enterprise MongoDB editions. You specify the
 MongoDB version for the :opsmgr:`Application Database
-</core/system-overview/#application-database>` in the
+</core/system-overview/#application-database>` in the required
 :opsmgrkube:`spec.applicationDatabase.version` setting.
-The :opsmgrkube:`spec.applicationDatabase.version` setting
-is a required field. For the list of supported MongoDB versions, see the
+For the list of supported MongoDB versions, see the
 :qr-mdb:`container registry </mongodb-enterprise-appdb-database?tab=tags>`.
 
 You must migrate the Application Database to the latest available

source/includes/steps-migrate-specified-to-new-appdb-v.yaml

@@ -10,10 +10,10 @@ content: |
   
   a. Locate the :opsmgrkube:`spec.applicationDatabase.version`
      setting.
-  b. Specify the latest MongoDB version from the
-     :qr-mdb:`container registry </mongodb-enterprise-appdb-database?tab=tags>`
-     that is compatible with your |onprem| version. |onprem| 4.4.x works
-     only with MongoDB 4.4.x series.
+  b. Specify the :qr-mdb:`latest available enterprise MongoDB version
+     </mongodb-enterprise-appdb-database?tab=tags>`
+     that is :ref:`compatible <k8s-onprem-version-compatibility>` with your
+     |onprem| version.
 
   For example, specify:
 

source/includes/steps-migrate-unspecified-to-new-appdb-v.yaml

@@ -22,10 +22,10 @@ content: |
   
   a. Locate the :opsmgrkube:`spec.applicationDatabase.version`
      setting.
-  b. Specify the latest MongoDB version from the
-     :qr-mdb:`container registry </mongodb-enterprise-appdb-database?tab=tags>`
-     that is compatible with your |onprem| version. |onprem| 4.4.x works
-     only with MongoDB 4.4.x series.
+  b. Specify the :qr-mdb:`latest available enterprise MongoDB version
+     </mongodb-enterprise-appdb-database?tab=tags>`
+     that is :ref:`compatible <k8s-onprem-version-compatibility>` with your
+     |onprem| version.
 
   For example, specify: