Update how-to-use-stored-procedures-triggers-udfs.md

Fix python-sdk post-trigger invoke example

Author: pietro29

articles/cosmos-db/how-to-use-stored-procedures-triggers-udfs.md

@@ -563,7 +563,7 @@ The following code shows how to call a post-trigger using the Python SDK:
 ```python
 item = {'category': 'Personal', 'name': 'Groceries',
         'description': 'Pick up strawberries', 'isComplete': False}
-container.create_item(item, pre_trigger_include='trgPreValidateToDoItemTimestamp')
+container.create_item(item, post_trigger_include='trgPreValidateToDoItemTimestamp')
 ```
 
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