[gnome-boxes] help: Make yelp-check validate pass

[Andre Klapper <aklapper src gnome org>]

commit 3680cc8e055ec93b3b1866896a852816c8d1267b
Author: Andre Klapper <a9016009 gmx de>
Date:   Tue Jun 1 21:56:36 2021 +0200

    help: Make yelp-check validate pass

 help/C/keystrokes.page | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/help/C/keystrokes.page b/help/C/keystrokes.page
index dfa1f19c..ce75f0e6 100644
--- a/help/C/keystrokes.page
+++ b/help/C/keystrokes.page
@@ -25,8 +25,8 @@
 
   <steps>
     <item><p>Click the keyboard
-    (<media its:translate="no" type="image" src="figures/input-keyboard-symbolic.svg
-"><span its:translate="yes">settings</span></media>)
+    (<media its:translate="no" type="image" src="figures/input-keyboard-symbolic.svg">
+    <span its:translate="yes">settings</span></media>)
     button in the header bar.</p></item>
     <item><p>Click the key combination you want to send. The available key
     combinations are:</p>