[release-notes/gnome-3-20] fix small typo

[Andreas Nilsson <andreasn src gnome org>]

commit 5b24c16cf4f41e467d6cc1e2d17c680e011a5203
Author: Andreas Nilsson <anilsson redhat com>
Date:   Wed Mar 16 16:28:15 2016 +0100

    fix small typo

 help/C/developers.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/developers.page b/help/C/developers.page
index 4d35717..309ad70 100644
--- a/help/C/developers.page
+++ b/help/C/developers.page
@@ -98,7 +98,7 @@
     <link href="https://blogs.gnome.org/alexl/2016/02/22/building-an-xdg-app-part-3/";>part three</link>,
     <link href="https://blogs.gnome.org/alexl/2016/02/23/building-an-xdg-app-part-4/";>part four</link>,
     <link href="https://blogs.gnome.org/alexl/2016/02/26/building-an-xdg-app-part-5/";>part five</link>).</p>
-    <p>If you want to try installing and running xdg-apps, acollection of 
+    <p>If you want to try installing and running xdg-apps, a collection of 
     nightly GNOME applications is available. In addition to being a great way 
     to try xdg-app, this is also a great way to test development versions of 
     GNOME applications, and demonstrates xdg-app’s ability to install multiple