Update articles/stream-analytics/stream-analytics-window-functions.md

Author: laurabren

articles/stream-analytics/stream-analytics-window-functions.md

@@ -51,7 +51,7 @@ When a partition key is provided, the events are grouped together by the key and
 
 ## Snapshot window
 
-[**Snapshot**](/stream-analytics-query/snapshot-window-azure-stream-analytics) windows groups events that have the same timestamp. Unlike other windowing types, which require a specific window function (such as [SessionWindow()](/stream-analytics-query/session-window-azure-stream-analytics), you can apply a snapshot window by adding System.Timestamp() to the GROUP BY clause.
+[**Snapshot**](/stream-analytics-query/snapshot-window-azure-stream-analytics) windows group events that have the same timestamp. Unlike other windowing types, which require a specific window function (such as [SessionWindow()](/stream-analytics-query/session-window-azure-stream-analytics), you can apply a snapshot window by adding System.Timestamp() to the GROUP BY clause.
 
 ![Stream Analytics snapshot window](media/stream-analytics-window-functions/snapshot.png)