[gnome-software] Fix make dist

[Richard Hughes <rhughes src gnome org>]

commit 14a4aa80540ddc13e772605754b2cdd0d8a36dbf
Author: Richard Hughes <richard hughsie com>
Date:   Mon Sep 2 14:58:41 2013 +0100

    Fix make dist

 src/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 96c6846..4b74eab 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -110,7 +110,7 @@ TESTS = gs-self-test
 
 EXTRA_DIST =                                           \
        gnome-software.gresource.xml                    \
-       gnome-software.sgml                             \
+       gnome-software.xml                              \
        gtk-style.css                                   \
        $(desktop_in_files)                             \
        $(UI_FILES)