use endpoint instead of region

Author: Qi Ding

articles/ai-services/speech-service/includes/common/environment-variables-resourcekey-endpoint.md

@@ -10,10 +10,10 @@ You need to authenticate your application to access Azure AI services. This arti
 
 [!INCLUDE [Azure key vault](~/reusable-content/ce-skilling/azure/includes/ai-services/security/microsoft-entra-id-akv-expanded.md)]
 
-To set the environment variables for your Speech resource key and region, open a console window, and follow the instructions for your operating system and development environment.
+To set the environment variables for your Speech resource key and endpoint, open a console window, and follow the instructions for your operating system and development environment.
 
 - To set the `SPEECH_KEY` environment variable, replace *your-key* with one of the keys for your resource.
-- To set the `ENDPOINT` environment variable, replace *your-endpoint* with one of the regions for your resource.
+- To set the `ENDPOINT` environment variable, replace *your-endpoint* with one of the endpoints for your resource.
 
 #### [Windows](#tab/windows)
 
@@ -62,7 +62,7 @@ For iOS and macOS development, you set the environment variables in Xcode. For e
 1. Under **Environment Variables** select the plus (+) sign to add a new environment variable.
 1. Enter `SPEECH_KEY` for the **Name** and enter your Speech resource key for the **Value**.
 
-To set the environment variable for your Speech resource region, follow the same steps. Set `ENDPOINT` to the endpoint of your resource. For example, `https://YourServiceRegion.api.cognitive.microsoft.com`.
+To set the environment variable for your Speech resource endpoint, follow the same steps. Set `ENDPOINT` to the endpoint of your resource. For example, `https://YourServiceRegion.api.cognitive.microsoft.com`.