[gobject-introspection] docs: Update Makefile.am

[Colin Walters <walters src gnome org>]

commit 4789682da92b098359dc3a5f340bee6f7310407d
Author: Dieter Verfaillie <dieterv optionexplicit be>
Date:   Wed Aug 21 12:03:25 2013 +0200

    docs: Update Makefile.am

 docs/reference/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index c3157be..6589202 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -28,7 +28,7 @@ IGNORE_HFILES= \
     girwriter.h            \
     girmodule.h
 
-INCLUDES=$(GIREPO_CFLAGS) -I$(top_srcdir)
+AM_CPPFLAGS=$(GIREPO_CFLAGS) -I$(top_srcdir)
 GTKDOC_LIBS = $(GIREPO_LIBS) $(top_builddir)/libgirepository-1.0.la 
$(top_builddir)/libgirepository-internals.la
 
 content_files = \