Remove docs about Azure DevOps PAT

Author: koesie10

docs/releasing.md

@@ -70,4 +70,4 @@ To regenerate the Open VSX token:
 1. Go to the [Access Tokens](https://open-vsx.org/user-settings/tokens) page and generate a new token.
 1. Update the secret in the `publish-open-vsx` environment in the project settings.
 
-To regenerate the VSCode Marketplace token, please see our internal documentation. Note that Azure DevOps PATs expire every 7 days and must be regenerated.
+Publishing to the VS Code Marketplace is done using a user-assigned managed identity and should not require the token to be manually updated.