[four-in-a-row] help: 'Undo your most recent move' item has been renamed and moved

[Andre Klapper <aklapper src gnome org>]

commit c2505b222b7fa5dff0ec75c47b352afcb4403e62
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Feb 23 19:12:25 2020 +0100

    help: 'Undo your most recent move' item has been renamed and moved

 help/C/make-easy.page | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/help/C/make-easy.page b/help/C/make-easy.page
index 6a3d3a4..7f008c0 100644
--- a/help/C/make-easy.page
+++ b/help/C/make-easy.page
@@ -26,8 +26,9 @@
 
   <p>When the computer makes a winning move because of your last move or when
   you accidentally make the wrong move, you can undo your last move and change
-  it. To undo your last move, press the <gui style="button">Undo your most recent
-  move</gui> button in the header bar or press
+  it. To undo your last move, press the button in the header bar which either
+  shows an arrow and the color to play or says <gui style="button">Ends</gui>,
+  and select <gui style="menuitem">Undo last move</gui>, or press
   <keyseq><key>Ctrl</key><key>Z</key></keyseq>. You can now drop your marble at
   a different row in the game area to change your move.</p>