[documentation/gcompris-teachers-handbook] doc: fix typos

[Johnny Jazeix]

Git commit c006e9ae5e50dd1d15e3aff5d8bcd27947fd3f7b by Johnny Jazeix.
Committed on 18/12/2025 at 08:10.
Pushed by jjazeix into branch 'master'.

fix typos

M  +1    -1    doc/index.docbook

https://invent.kde.org/documentation/gcompris-teachers-handbook/-/commit/c006e9ae5e50dd1d15e3aff5d8bcd27947fd3f7b

diff --git a/doc/index.docbook b/doc/index.docbook
index 4bfa2c9..55cc5fb 100644
--- a/doc/index.docbook
+++ b/doc/index.docbook
@@ -119,7 +119,7 @@ GCompris is a multi-activity educational software. This documentation is for the
     </para>
     <para>
       A button to show/hide the title of the buttons in the side menu bar
-      (the sandwich icon) allows to save some space once the user knows the
+      (the hamburger icon) allows to save some space once the user knows the
       meaning of each icon.<mediaobject>
         <imageobject>
           <imagedata fileref="main_screen_hamburger.png" />