Typo "@@LANGID"→"@@langid"

https://docs.microsoft.com/en-us/sql/t-sql/functions/langid-transact-sql?view=sql-server-ver15
#PingMSFTdocs

Author: hyoshioka0128

docs/t-sql/functions/langid-transact-sql.md

@@ -1,5 +1,5 @@
 ---
-description: "@@LANGID (Transact-SQL)"
+description: "@@LANGID (Transact-SQL)"
 title: "@@LANGID (Transact-SQL) | Microsoft Docs"
 ms.custom: ""
 ms.date: "09/18/2017"