Update migrate-data-striim.md

We are trying to get rid of references to PuTTY in the docs. Is this change okay? We can also mention that PowerShell supports OpenSSH, but cmd prompt does too and many folks have a Bash prompt if they use WSL.

Thanks!
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cc: @TheovanKraay

Author: cynthn

articles/cosmos-db/cassandra/migrate-data-striim.md

@@ -75,7 +75,7 @@ In this section, you will configure the Azure Cosmos DB for Apache Cassandra acc
 
    :::image type="content" source="media/migrate-data-striim/get-ssh-url.png" alt-text="Get the SSH URL":::
 
-1. Open a new terminal window and run the SSH command you copied from the Azure portal. This article uses terminal in a MacOS, you can follow the similar instructions using PuTTY or a different SSH client on a Windows machine. When prompted, type **yes** to continue and enter the **password** you have set for the virtual machine in the previous step.
+1. Open a new terminal window and run the SSH command you copied from the Azure portal. This article uses terminal in a MacOS, you can follow the similar instructions using an SSH client on a Windows machine. When prompted, type **yes** to continue and enter the **password** you have set for the virtual machine in the previous step.
 
    :::image type="content" source="media/migrate-data-striim/striim-vm-connect.png" alt-text="Connect to Striim VM":::