Fixed comment syntax

database/update1.sql

@@ -1,17 +1,17 @@
---- create new table to record the database version
+-- create new table to record the database version
 	CREATE TABLE IF NOT EXISTS `schema_version` (
 		`id` int(11) PRIMARY KEY auto_increment,
 		`version` int(11) NOT NULL UNIQUE,
 		`when` datetime NOT NULL
 	) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_general_ci;
 
---- alter learnprogress by one column
+-- alter learnprogress by one column
 	ALTER TABLE `learnprogress` ADD `passed` int(11) NOT NULL DEFAULT '0';
 
---- update new column passed with -1
+-- update new column passed with -1
 	UPDATE `learnprogress` SET `passed`=-1;
 
---- update schema version number
+-- update schema version number
 	INSERT INTO `schema_version`
 		(`version`, `when`) VALUES
 		('1'      , NOW() );