[gnome-builder] build: fix typo

[Christian Hergert <chergert src gnome org>]

commit 9965c47c4b3f20c1c2e7d442d10d5835fb8f69c8
Author: Christian Hergert <christian hergert me>
Date:   Thu Apr 28 02:09:07 2016 -0700

    build: fix typo

 data/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index 8e02c5e..aaa20a8 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -9,7 +9,7 @@ appstream_XML = $(appstream_in_files:.xml.in=.xml)
 # Desktop launcher and description file.
 desktopdir = $(datadir)/applications
 desktop_in_in_files = org.gnome.Builder.desktop.in.in
-desktop_in_files = org.gnome.Builder.desktop.inn
+desktop_in_files = org.gnome.Builder.desktop.in
 desktop_DATA = org.gnome.Builder.desktop
 @INTLTOOL_DESKTOP_RULE@