[gnome-nibbles] Fix installation of appdata files

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 730513e099faab110fb3a1d7d818ffa9bf5def9a
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue Mar 3 09:52:29 2015 -0600

    Fix installation of appdata files
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745537

 data/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index e7949ec..90b5773 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -23,7 +23,7 @@ desktop_DATA = $(desktop_in_files:.desktop.in=.desktop)
 @INTLTOOL_DESKTOP_RULE@
 
 appstream_in_files = gnome-nibbles.appdata.xml.in
-appstream_XML = $(appdata_in_files:.xml.in=.xml)
+appstream_XML = $(appstream_in_files:.xml.in=.xml)
 @APPSTREAM_XML_RULES@
 @INTLTOOL_XML_RULE@