Merge pull request #194168 from Clare-Zheng82/0406-Update_Look_up_activity_doc_note

Add Note in Supported capabilities section in Lookup activity doc

Author: PRMerger18

articles/data-factory/control-flow-lookup-activity.md

@@ -8,7 +8,7 @@ ms.service: data-factory
 ms.subservice: orchestration
 ms.custom: synapse
 ms.topic: conceptual
-ms.date: 09/09/2021
+ms.date: 04/06/2022
 ---
 
 # Lookup activity in Azure Data Factory and Azure Synapse Analytics
@@ -42,7 +42,9 @@ Note the following:
 - The Lookup activity can return up to **5000 rows**; if the result set contains more records, the first 5000 rows will be returned.
 - The Lookup activity output supports up to **4 MB** in size, activity will fail if the size exceeds the limit. 
 - The longest duration for Lookup activity before timeout is **24 hours**.
-- When you use query or stored procedure to lookup data, make sure to return one and exact one result set. Otherwise, Lookup activity fails.
+
+> [!Note]
+> When you use query or stored procedure to lookup data, make sure to return one and exact one result set. Otherwise, Lookup activity fails.
 
 The following data sources are supported for Lookup activity.