fixing reference to WestUS

Author: microsoftshawarma

articles/trusted-signing/how-to-signing-integrations.md

@@ -89,12 +89,14 @@ To sign using Trusted Signing, you need to provide the details of your Trusted S
 | Region       | Region Class Fields  | Endpoint URI value  |
 |--------------|-----------|------------|
 | East US  | EastUS  | `https://eus.codesigning.azure.net` |
-| West US   | WestUS  | `https://wus.codesigning.azure.net` |
+| West US3 <sup>[1](#myfootnote1)</sup>   | WestUS3  | `https://wus3.codesigning.azure.net` |
 | West Central US  | WestCentralUS  | `https://wcus.codesigning.azure.net` |
 | West US 2   | WestUS2   | `https://wus2.codesigning.azure.net` |
 | North Europe   | NorthEurope   | `https://neu.codesigning.azure.net`   |
 | West Europe   | WestEurope   | `https://weu.codesigning.azure.net`  |
 
+<a name="myfootnote1">1</a>: WestUS3 coming soon!
+
 * The optional `"CorrelationId"` field is an opaque string value that you can provide to correlate sign requests with your own workflows such as build identifiers or machine names.
 
 ### Invoke SignTool to sign a file