Add Azure Account extension version requirement to Identity README (Azure#20873)

Author: scottaddie

sdk/identity/identity/README.md

@@ -88,9 +88,9 @@ If interactive authentication cannot be supported in the session, then the `-Use
 
 #### Authenticate via Visual Studio Code
 
-Developers using Visual Studio Code can use the [Azure Account extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode.azure-account) to authenticate via the IDE. Apps using `DefaultAzureCredential` or `VisualStudioCodeCredential` can then use this account to authenticate calls in their app when running locally.
+Developers using Visual Studio Code can use the [Azure Account extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode.azure-account) to authenticate via the editor. Apps using `DefaultAzureCredential` or `VisualStudioCodeCredential` can then use this account to authenticate calls in their app when running locally.
 
-To authenticate in Visual Studio Code, first ensure the Azure Account extension is installed. Once the extension is installed, open the **Command Palette** and run the **Azure: Sign In** command.
+To authenticate in Visual Studio Code, ensure **version 0.9.11 or earlier** of the Azure Account extension is installed. Once installed, open the **Command Palette** and run the **Azure: Sign In** command.
 
 Additionally, use the [`@azure/identity-vscode`](https://github.com/Azure/azure-sdk-for-js/tree/main/sdk/identity/identity-vscode) plugin package. This package provides the dependencies of `VisualStudioCodeCredential` and enables it. See [Plugins](##plugins).