Index: src/wp-admin/includes/class-wp-screen.php
===================================================================
--- src/wp-admin/includes/class-wp-screen.php	(revision 54664)
+++ src/wp-admin/includes/class-wp-screen.php	(working copy)
@@ -1116,7 +1116,7 @@
 		<legend><?php _e( 'Screen elements' ); ?></legend>
 		<p>
 			<?php _e( 'Some screen elements can be shown or hidden by using the checkboxes.' ); ?>
-			<?php _e( 'They can be expanded and collapsed by clickling on their headings, and arranged by dragging their headings or by clicking on the up and down arrows.' ); ?>
+			<?php _e( 'Expand or collapse the elements by clicking on their headings, and arrange them by dragging their headings or by clicking on the up and down arrows.' ); ?>
 		</p>
 		<?php