docs: align comments

Author: kenjis

user_guide_src/source/dbmgmt/forge/025.php

@@ -1,4 +1,4 @@
 <?php
 
-$forge->dropColumn('table_name', 'column_1,column_2'); // by proving comma separated column names
+$forge->dropColumn('table_name', 'column_1,column_2');      // by proving comma separated column names
 $forge->dropColumn('table_name', ['column_1', 'column_2']); // by proving array of column names