Fix README.md to include mysql flag
@@ -136,6 +136,8 @@ sqlx = { version = "0.4.2", features = [ "runtime-async-std-native-tls" ] }
- `postgres`: Add support for the Postgres database server.
+- `mysql`: Add support for the MySQL/MariaDB database server.
+
- `mssql`: Add support for the MSSQL database server.
- `sqlite`: Add support for the self-contained [SQLite](https://sqlite.org/) database engine.
