[text analytics] fix analyze example
fixes
@@ -471,7 +471,9 @@ This sample demonstrates the usage for [long-running operations](#long-running-o
```python
from azure.core.credentials import AzureKeyCredential
-from azure.ai.textanalytics import TextAnalyticsClient
+from azure.ai.textanalytics import (
+ TextAnalyticsClient, EntitiesRecognitionTask, PiiEntitiesRecognitionTask, KeyPhraseExtractionTask
+)
credential = AzureKeyCredential("<api_key>")
endpoint="https://<region>.api.cognitive.microsoft.com/"
