Updates version number format

Author: jwilson-mdb

source/installation/install-on-an-unattended-server/debian-server-installation/install-debian-server.txt

@@ -38,7 +38,7 @@ Steps
 
    .. code-block:: bash
 
-      sudo apt install ./mongodb-relational-migrator_X.X.X-1_amd64.deb
+      sudo apt install ./mongodb-relational-migrator_<version_number>-1_amd64.deb
 
 #. (Optional) To connect to Oracle or MySQL drivers, download and place the drivers 
    into your Relational Migrator directory.
@@ -112,7 +112,7 @@ If your installation fails with an error, use the following command to see error
 
 .. code-block:: bash
 
-   sudo dpkg -i ./mongodb-relational-migrator_X.X.X-1_amd64.deb
+   sudo dpkg -i ./mongodb-relational-migrator_<version_number>-1_amd64.deb
 
 
 Next Steps