update timestamp

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cc: @dcurwin

Author: dcurwin

articles/backup/azure-file-share-support-matrix.md

@@ -2,7 +2,7 @@
 title: Support Matrix for Azure file share backup
 description: Provides a summary of support settings and limitations when backing up Azure file shares.
 ms.topic: conceptual
-ms.date: 1/26/2020
+ms.date: 5/07/2020
 ---
 
 # Support matrix for Azure file share backup