[gnome-builder] build: disable with_help by default

[Christian Hergert <chergert src gnome org>]

commit ae87321bff113cdfd264e8a60ffe80ecc27df92e
Author: Christian Hergert <chergert redhat com>
Date:   Thu Aug 9 08:45:17 2018 -0700

    build: disable with_help by default

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index ca94bcd62..69fb8062f 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -14,7 +14,7 @@ option('with_channel',
 option('with_editorconfig', type: 'boolean')
 option('with_webkit', type: 'boolean')
 option('with_vapi', type: 'boolean')
-option('with_help', type: 'boolean')
+option('with_help', type: 'boolean', value: false)
 option('with_docs', type: 'boolean', value: false)
 
 option('ctags_path', type: 'string', value: '')