Highlight configuration in DB for migration-assist (#7534)

* Highlight configuration in DB for migration-assist

* Update source/deploy/postgres-migration-assist-tool.rst

source/deploy/postgres-migration-assist-tool.rst

@@ -138,7 +138,9 @@ Step 7 - Configure Mattermost to utilize the new PostgreSQL database
 
 This is the final step of the migration process, where we need to update the Mattermost configuration to point to the new PostgreSQL database. To do so, locate the ``SqlSettings.DataSource`` and ``SqlSettings.DriverName`` fields in the ``config.json`` then modify these fields to reflect the new PostgreSQL database connection details. 
 
-If your configuration was stored in the database, see the :ref:`configuration in database <deploy/manual-postgres-migration:configuration in database>` documentation for migration details. Once migrated, you should also update the ``MM_CONFIG`` environment variable to point to the new DSN.
+.. note::
+
+  If your configuration was stored in the database, see the :ref:`configuration in database <deploy/manual-postgres-migration:configuration in database>` documentation for migration details. Once migrated, you should also update the ``MM_CONFIG`` environment variable to point to the new DSN.
 
 Compile the migration-assist tool
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