fix broken links

Author: PhilKang0704

articles/communication-services/quickstarts/email/send-email-advanced/includes/prepend-js.md

@@ -137,7 +137,7 @@ const emailClient = new EmailClient(endpoint, credential);
 
 #### [AzureKeyCredential](#tab/azurekeycredential)
 
-Email clients can also be authenticated using an [AzureKeyCredential](https://azuresdkdocs.blob.core.windows.net/$web/python/azure-core/latest/azure.core.html#azure.core.credentials.AzureKeyCredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
+Email clients can also be authenticated using an [AzureKeyCredential](/python/api/azure-core/azure.core.credentials.azurekeycredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
 
 ```javascript
 const { EmailClient, KnownEmailSendStatus } = require("@azure/communication-email");

articles/communication-services/quickstarts/email/send-email-advanced/includes/prepend-net.md

@@ -143,7 +143,7 @@ EmailClient emailClient = new EmailClient(new Uri(resourceEndpoint), new Default
 
 #### [AzureKeyCredential](#tab/azurekeycredential)
 
-Email clients can also be authenticated using an [AzureKeyCredential](https://azuresdkdocs.blob.core.windows.net/$web/python/azure-core/latest/azure.core.html#azure.core.credentials.AzureKeyCredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
+Email clients can also be authenticated using an [AzureKeyCredential](/python/api/azure-core/azure.core.credentials.azurekeycredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
 
 ```csharp
 var key = new AzureKeyCredential("<your-key-credential>");

articles/communication-services/quickstarts/email/send-email-advanced/includes/prepend-python.md

@@ -186,7 +186,7 @@ email_client = EmailClient(endpoint, DefaultAzureCredential())
 
 #### [AzureKeyCredential](#tab/azurekeycredential)
 
-Email clients can also be authenticated using an [AzureKeyCredential](https://azuresdkdocs.blob.core.windows.net/$web/python/azure-core/latest/azure.core.html#azure.core.credentials.AzureKeyCredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
+Email clients can also be authenticated using an [AzureKeyCredential](/python/api/azure-core/azure.core.credentials.azurekeycredential). Both the `key` and the `endpoint` can be founded on the "Keys" pane under "Settings" in your Communication Services Resource.
 
 ```python
 from azure.communication.email import EmailClient