[gnome-builder] build: disable gtk-doc for distcheck

[Christian Hergert <chergert src gnome org>]

commit 0276dd7fd829f3d3983f2af0612991f8032304c3
Author: Christian Hergert <christian hergert me>
Date:   Mon May 18 01:33:30 2015 -0700

    build: disable gtk-doc for distcheck
    
    It's too early to require documented symbols for distcheck.

 Makefile.am |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index d8fc752..df06140 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -20,9 +20,10 @@ DISTCLEANFILES = \
        intltool-update \
        po/.intltool-merge-cache
 
+# --disable-gtk-doc until future notice
 DISTCHECK_CONFIGURE_FLAGS = \
        --enable-introspection \
-       --enable-gtk-doc \
+       --disable-gtk-doc \
        --disable-tracing \
        --enable-appstream-util \
        $(NULL)