NOBUG minor typo in phpdocs ; merged from 19_STABLE

backup/restorelib.php

@@ -723,7 +723,7 @@ function restore_print_course_header ($course_header) {
     *           If match mnethost and user is deleted in backup file
     *           and by email = email_without_time(backup_email) and non-zero firstaccess=> ok, return target user
     *      2D - Conflict: If match by username and mnethost and not by (email or non-zero firstaccess) => conflict, return false
-    *      1E - None of the above, return true => User needs to be created
+    *      2E - None of the above, return true => User needs to be created
     *
     * Note: for DB deleted users email is stored in username field, hence we
     *       are looking there for emails. See delete_user()