Update access-your-workspace.rst (#7723)

* Update access-your-workspace.rst

Added note that Server URLs must begin with either http:// or https:// in mobile as I have seen a few outreaches from users stuck at this point.

* Update source/collaborate/access-your-workspace.rst

---------

Co-authored-by: Carrie Warner (Mattermost) <[email protected]>

source/collaborate/access-your-workspace.rst

@@ -47,7 +47,7 @@ Your Mattermost :doc:`workspace </guides/use-mattermost>` is accessible through
 .. tab:: Mobile
 
   1. Download and install the Mattermost :doc:`iOS mobile app </collaborate/install-ios-app>` or the :doc:`Android mobile app </collaborate/install-android-app>`.
-  2. When prompted, enter the Mattermost server link and a display name for the Mattermost instance. The display name is helpful in cases where you connect to multiple Mattermost instances. See the :doc:`server connections </preferences/connect-multiple-workspaces>` documentation for details.
+  2. When prompted, enter the Mattermost server link and a display name for the Mattermost instance. Server URLs must begin with either ``http://`` or ``https://``. The display name is helpful in cases where you connect to multiple Mattermost instances. See the :doc:`server connections </preferences/connect-multiple-workspaces>` documentation for details.
   3. Enter your user credentials to log into Mattermost. 
   4. The team that displays first in the team sidebar opens. If you're not a member of a team yet, you're prompted to select a team to join.
 
@@ -116,4 +116,4 @@ Multi-factor authentication
 
 If your system admin :ref:`enables multi-factor authentication <onboard/multi-factor-authentication:enabling mfa>` for your Mattermost instance, you can :doc:`optionally set up multi-factor authentication </preferences/manage-your-security-preferences>` for your Mattermost user account by selecting your profile picture located in the top-right corner of Mattermost, and going to **Security > Multi-Factor Authentication**.
 
-If your system admin :ref:`enforces multi-factor authentication <onboard/multi-factor-authentication:enforcing mfa>`, you are required to :doc:`set up multi-factor authentication </preferences/manage-your-security-preferences>` for your Mattermost account. When you attempt to log in to Mattermost, you're directed to the multi-factor authentication setup page. You won't be able to access Mattermost until multi-factor setup is complete. If you encounter issues setting up multi-factor authentication, contact your Mattermost system admin for assistance.
+If your system admin :ref:`enforces multi-factor authentication <onboard/multi-factor-authentication:enforcing mfa>`, you are required to :doc:`set up multi-factor authentication </preferences/manage-your-security-preferences>` for your Mattermost account. When you attempt to log in to Mattermost, you're directed to the multi-factor authentication setup page. You won't be able to access Mattermost until multi-factor setup is complete. If you encounter issues setting up multi-factor authentication, contact your Mattermost system admin for assistance.