[Doc-A-thon] Updating Linux command.

Author: msaenzbosupport

articles/site-recovery/azure-to-azure-replicate-after-migration.md

@@ -59,8 +59,16 @@ Install the [Azure Linux VM](../virtual-machines/extensions/agent-linux.md) agen
 
 1. Run this command: **ps -e** to ensure that the Azure agent is running on the Linux VM.
 2. If the process isn't running, restart it by using the following commands:
-    - For Ubuntu: **service walinuxagent start**
-    - For other distributions: **service waagent start**
+    - For Ubuntu/Debian:
+
+     ```bash
+        systemctl enable --now walinuxagent.service
+     ```
+    - For other distributions: 
+    
+    ```bash
+       systemctl enable --now waagent.service
+    ```
 
 
 ## Uninstall the Mobility service