correct import statement

Author: iscai-msft

sdk/textanalytics/azure-ai-textanalytics/azure/ai/textanalytics/_user_agent.py

@@ -4,6 +4,8 @@
 # Licensed under the MIT License.
 # ------------------------------------
 
-import platform
+from ._version import VERSION
 
-USER_AGENT = "ai-textanalytics/{}".format(VERSION)
+USER_AGENT = "ai-textanalytics/{} Python/{} ({})".format(
+    VERSION, platform.python_version(), platform.platform()
+)