Update datasource_item.py

Author: jacalata

tableauserverclient/models/datasource_item.py

@@ -24,7 +24,7 @@ def __init__(self, project_id, name=None):
         self._content_url = None
         self._created_at = None
         self._datasource_type = None
-        self._description = None
+        self.description = None
         self._encrypt_extracts = None
         self._has_extracts = None
         self._id = None
@@ -134,7 +134,7 @@ def datasource_type(self):
 
     @property
     def description(self):
-        return self._description
+        return self.description
 
     @property
     def updated_at(self):