[rhythmbox] Fixed an item name in a help

[Marek Černocký <mcernocky src gnome org>]

commit ab078a7238b5c176fa1de779b841c03277587a1d
Author: Marek Cernocky <marek_cernocky conel cz>
Date:   Tue Feb 6 10:08:17 2018 +0100

    Fixed an item name in a help

 help/C/index.docbook |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/help/C/index.docbook b/help/C/index.docbook
index 6e942e2..2ad32db 100644
--- a/help/C/index.docbook
+++ b/help/C/index.docbook
@@ -396,8 +396,7 @@
                </para>
        <para>
                                The display of the side pane can be toggled on or off by selecting
-                               <guimenuitem>Play Queue in Side Pane</guimenuitem>
-                               in the application menu on the top bar.
+                               <guimenuitem>Side Pane</guimenuitem> in the application menu on the top bar.
                        </para>
     </sect2>
     <sect2 id="player-toolbar">