(DOCSP-49339) Clarify that the Blockstore ID is S3-Compatible in transition procedure-v8.0-backport (841) (#843)

# Backport

This will backport the following commits from `master` to `v8.0`:
- [(DOCSP-49339) Clarify that the Blockstore ID is S3-Compatible in
transition procedure
(#841)](10gen/docs-ops-manager#841)

<!--- Backport version: 9.6.1 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

Author: elyse-mdb

source/includes/steps-admin-transition-s3-blockstore.yaml

@@ -8,15 +8,15 @@ stepnum: 3
 level: 4
 ref: backup-job-link
 ---
-title: "Select the Blockstore ID to transition to."
+title: "Select the S3 blockstore to transition to."
 stepnum: 3
 level: 4
 ref: blockstore-id-transition
 content: |
 
-  a. Click the :guilabel:`Blockstore ID` link.
+  a. In the :guilabel:`Blockstore ID` list box, click the :guilabel:`Update store` link.
 
-  #. Select the Blockstore ID to transition to.
+  #. Select the S3-compatible snapshot store from the drop-down.
 
   #. Click :guilabel:`Update`.