Explicitly repeat to include the /admin part in transfer URLs examples (#1827)

* Update transfer.md

The transfer will fail if there is no /admin appended to the URL. This should be mentioned.

* Update docusaurus/docs/dev-docs/data-management/transfer.md

* Update docusaurus/docs/dev-docs/data-management/transfer.md

---------

Co-authored-by: Pierre Wizla <[email protected]>

Author: derschiw

docusaurus/docs/dev-docs/data-management/transfer.md

@@ -80,7 +80,7 @@ Initiating a data transfer depends on whether you want to push data to a remote
 
   1. Start the Strapi server for the destination instance.
   2. In a new terminal window, navigate to the root directory of the source instance.
-  3. Run the following minimal command to initiate the transfer:
+  3. Run the following minimal command to initiate the transfer, ensuring `destinationURL` is the full URL to the admin panel (i.e., the URL includes the `/admin` part):
 
     <Tabs groupId="yarn-npm">
 
@@ -111,7 +111,7 @@ Initiating a data transfer depends on whether you want to push data to a remote
 
 1. Start the Strapi server for the source instance.
 2. In a new terminal window, navigate to the root directory of the destination instance.
-3. Run the following minimal command to initiate the transfer:
+  3. Run the following minimal command to initiate the transfer, ensuring `remoteURL` is the full URL to the admin panel (i.e., the URL includes the `/admin` part):
 
   <Tabs groupId="yarn-npm">