Typo "Azure database for PostgreSQL"→"Azure Database for PostgreSQL"

https://learn.microsoft.com/en-us/azure/postgresql/migrate/concepts-single-to-flexible?source=recommendations
https://github.com/MicrosoftDocs/azure-docs/blob/main/articles/postgresql/migrate/concepts-single-to-flexible.md
#PingMSFTDocs

Author: hyoshioka0128

articles/postgresql/migrate/concepts-single-to-flexible.md

@@ -1,7 +1,7 @@
 ---
 title: "Migration tool - Azure Database for PostgreSQL Single Server to Flexible Server - Concepts"
 titleSuffix: Azure Database for PostgreSQL Flexible Server
-description: Concepts about migrating your Single server to Azure database for PostgreSQL Flexible server.
+description: Concepts about migrating your Single server to Azure Database for PostgreSQL Flexible server.
 author: shriram-muthukrishnan
 ms.author: shriramm
 ms.service: postgresql