MDL-25426 typo fix

mod/lesson/lang/en/lesson.php

@@ -377,7 +377,7 @@
 $string['studentoneminwarning'] = 'Warning: You have 1 minute or less to finish the lesson.';
 $string['studentresponse'] = '{$a}\'s response';
 $string['submitname'] = 'Submit name';
-$string['teacherjumpwarning'] = 'An {$a->cluster} jump or an {$a->unseen} jump is being used in this lesson.  The nextpPage jump will be used instead.  Login as a student to test these jumps.';
+$string['teacherjumpwarning'] = 'An {$a->cluster} jump or an {$a->unseen} jump is being used in this lesson.  The next page jump will be used instead.  Login as a student to test these jumps.';
 $string['teacherongoingwarning'] = 'Ongoing score is only displayed for student.  Login as a student to test ongoing score';
 $string['teachertimerwarning'] = 'Timer only works for students.  Test the timer by logging in as a student.';
 $string['thatsthecorrectanswer'] = 'That\'s the correct answer';