Fixed PHP notices when DB receives "ENGINE" instead of "engine"

Author: claudiosanches

src/Controllers/Version2/class-wc-rest-system-status-v2-controller.php

@@ -700,7 +700,7 @@ public function get_database_info() {
 			$wpdb->prepare(
 				"SELECT
 				    table_name AS 'name',
-					engine,
+					engine AS 'engine',
 				    round( ( data_length / 1024 / 1024 ), 2 ) 'data',
 				    round( ( index_length / 1024 / 1024 ), 2 ) 'index'
 				FROM information_schema.TABLES