[MNM] Onboarding workflow (cloudflare#21927)

* added workflow info

* refined steps

Author: marciocloudflare

src/content/docs/magic-network-monitoring/get-started.mdx

@@ -7,6 +7,8 @@ sidebar:
 
 import { APIRequest, Badge, GlossaryTooltip } from "~/components";
 
+Magic Network Monitoring includes an onboarding workflow that guides you step-by-step through the product configuration process. If you are unable to complete the configuration in one session, you can exit the workflow and resume it at any time.
+
 To begin using Magic Network Monitoring for network and/or cloud traffic visibility, complete the list of tasks below.
 
 - [NetFlow and sFlow guide](#netflow-and-sflow-guide)
@@ -30,7 +32,7 @@ When you register your router with Cloudflare, your router links your NetFlow or
 2. Go to **Analytics & Logs** > **Magic Monitoring**.
 3. In **Magic Network Monitoring Analytics**, select **Configure Magic Network Monitoring**.
 4. Select the **Configure routers** tab.
-5. Under **IP Address**, enter your router's public IP address.
+5. (Optional) Under **IP Address**, enter your router's public IP address.
 6. Under **Default router sampling rate**, enter a value for the <GlossaryTooltip term="sampling">sampling</GlossaryTooltip> rate. The value should match the sampling rate of your NetFlow or sFlow configuration.
 7. Select **Next**.