Fixed phpdocs

trigger/lib.php

@@ -124,7 +124,7 @@ abstract class base_automatic extends base {
     /**
      * Allows to return a where clause, which reduces the recordset of relevant courses.
      * The return value has to consist of an array with two values. The first one includes the where sql statement,
-     * which will be concatenated using an 'AND' to the recordset query (e.g. 'course.id = $courseid').
+     * which will be concatenated using an 'AND' to the recordset query (e.g. '{course}.id = $courseid').
      * The second one is the set of parameters for the sql query, which will be merged with other param sets.
      * @params $triggerid int id of the trigger.
      */