Update ChangeLog.md

Author: baselmicrosoft

src/Sql/Sql/ChangeLog.md

@@ -20,6 +20,7 @@
 ## Upcoming Release
 * Fix missing examples for Set-AzSqlDatabaseSecondary cmdlet
 * Fix set Vulnerability Assessment recurring scans without providing any email addresses
+* Fix a small typo in a warining message.
 
 ## Version 1.13.0
 * Add Instance Failover Group cmdlets from preview release to public release