[gtk-doc/gtk-doc-for-gtk4] Turn off tests

[Matthias Clasen <matthiasc src gnome org>]

commit 4b737b1e123acdb9714cfa1915101f4736d2c9c0
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Apr 21 00:06:10 2020 -0400

    Turn off tests
    
    The breaking tests in the testsuite are causing
    make dist to fail in gtk, now that we are using
    gtk-doc as a subproject.

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index f1f54a4..816699c 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -8,5 +8,5 @@ option('yelp_manual',
        type: 'boolean', value: true,
        description: 'Build the user manual (requires yelp-tools)')
 option('tests',
-       type: 'boolean', value: true,
+       type: 'boolean', value: false,
        description: 'Build the test suite (requires glib)')