[gobject-introspection] comment about generation of gtk-doc.make in autogen.sh

[Colin Walters <walters src gnome org>]

commit 5006900aa2039a9955f10b3f958c14b70465cfe4
Author: Karl-Philipp Richter <krichter722 aol de>
Date:   Wed Feb 4 22:47:13 2015 +0100

    comment about generation of gtk-doc.make in autogen.sh

 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 d3b3f93..332bd70 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -96,7 +96,7 @@ GTKDOC_LIBS=                                          \
 
 # Other files to distribute
 # e.g. EXTRA_DIST += version.xml.in
-include $(top_srcdir)/gtk-doc.make
+include $(top_srcdir)/gtk-doc.make # generated by autogen.sh
 
 # Other files to distribute
 EXTRA_DIST += version.xml.in