added HSM support for MySQL

Author: tameikal-msft

articles/security/fundamentals/encryption-models.md

@@ -184,7 +184,7 @@ The Azure services that support each encryption model:
 | Azure SQL Database               | Yes                | Yes, RSA 3072-bit, including Managed HSM | Yes                |
 | Azure SQL Managed Instance       | Yes                | Yes, RSA 3072-bit, including Managed HSM | Yes                |
 | Azure SQL Database for MariaDB   | Yes                | -                  | -                  |
-| Azure SQL Database for MySQL     | Yes                | Yes                | -                  |
+| Azure SQL Database for MySQL     | Yes                | Yes, including Managed HSM                | -                  |
 | Azure SQL Database for PostgreSQL | Yes               | Yes, including Managed HSM | -                  |
 | Azure Synapse Analytics (dedicated SQL pool (formerly SQL DW) only) | Yes                | Yes, RSA 3072-bit, including Managed HSM | -                  |
 | SQL Server Stretch Database      | Yes                | Yes, RSA 3072-bit  | Yes                |