etc/ORG-NEWS: Document a change

* etc/ORG-NEWS: Document the ability to scroll up and down in the
agenda commands dispatch window.

etc/ORG-NEWS

@@ -169,9 +169,14 @@ This feature is the same as ~org-fontify-done-headline~, but for TODO
 headlines instead.  This allows you to distinguish TODO headlines from
 normal headlines.  The face can be customized via ~org-headline-todo~.
 
+*** C-n, C-p, SPC and DEL in agenda commands dispatch window
+
+You can now use =C-n=, =C-p=, =SPC= and =DEL= key to scroll up and
+down the agenda commands dispatch window.
+
 *** Exit column view with =<C-c C-c>=
 
-=<C-c C-c>= Now exits the column view from (almost) any point in the
+=<C-c C-c>= now exits the column view from (almost) any point in the
 buffer.  Before this change, only the key =<q>= was used for this, and
 it was only functional on lines displayed as columns.