[frogr] Fix a typo in help file

[Andre Klapper <aklapper src gnome org>]

commit d8a5adff4c614e34d21dcae125abcc33bed4fe0c
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Sep 28 19:38:22 2017 +0200

    Fix a typo in help file

 help/C/edit-pictures.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/edit-pictures.page b/help/C/edit-pictures.page
index b0de7f1..3c5ddf1 100644
--- a/help/C/edit-pictures.page
+++ b/help/C/edit-pictures.page
@@ -10,7 +10,7 @@
   </info>
 
   <title>Edit details</title>
-  <p>To edit the details of a picture or a video, right-click on an element and choose <gui>Edit 
Details</gui>.Until you edit the details, these will use the default details.</p>
+  <p>To edit the details of a picture or a video, right-click on an element and choose <gui>Edit 
Details</gui>. Until you edit the details, these will use the default details.</p>
   <figure>
     <title>Edit picture details</title>
     <desc>Amend the details of the picture.</desc>