[11.x] Fix undefined key "mysql" in DbCommand (#50147)

* Fix undefined key "mysql" in DbCommand

* Remove whitespace at end of line

Author: svenluijten

src/Illuminate/Database/Console/DbCommand.php

@@ -130,7 +130,8 @@ public function commandEnvironment(array $connection)
     public function getCommand(array $connection)
     {
         return [
-            'mysql', 'mariadb' => 'mysql',
+            'mysql' => 'mysql',
+            'mariadb' => 'mysql',
             'pgsql' => 'psql',
             'sqlite' => 'sqlite3',
             'sqlsrv' => 'sqlcmd',