Update polybase-guide.md

Author: WilliamDAssafMSFT

docs/relational-databases/polybase/polybase-guide.md

@@ -1,7 +1,7 @@
 ---
 title: "Introducing data virtualization with PolyBase"
 description: PolyBase enables your SQL Server instance to process Transact-SQL queries that read data from external data sources such as Hadoop and Azure blob storage.
-ms.date: 07/25/2022
+ms.date: 08/22/2022
 ms.prod: sql
 ms.technology: polybase
 ms.topic: "overview"
@@ -167,4 +167,4 @@ Review [PolyBase Transact-SQL reference](polybase-t-sql-objects.md) with example
 - [ODBC Generic Types](polybase-configure-odbc-generic.md)
 - [S3-compatible object storage](polybase-configure-s3-compatible.md)
 - [CSV](virtualize-csv.md)
-- [Delta table](virtualize-delta.md)
+- [Delta table](virtualize-delta.md)