[libgdata/wip/rishi/gtk-doc-default-disable] build: Disable the gtk-doc documentation by default

[Debarshi Ray <debarshir src gnome org>]

commit 828f29fa67e468e8a2f26c100006ab25e6a9eb45
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Mar 27 18:43:25 2020 +0100

    build: Disable the gtk-doc documentation by default
    
    This matches the documentation in the current Meson build, and the
    behaviour of the old Autotools build.
    
    Fallout from d3ba69233a9ef1f415b10efc44ea186a6d58a2bb

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index 68c63729..a5cae5fc 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -36,7 +36,7 @@ option('man',
 
 option('gtk_doc',
   type: 'boolean',
-  value: true,
+  value: false,
   description: 'use gtk-doc to build documentation (default: false)')
 
 option('introspection',