[gnome-continuous] Update Meson args for gdk-pixbuf

[Bastien Nocera <hadess src gnome org>]

commit 172a5d100e121b9016a7f62ca761fcc600b2f4fd
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Dec 5 06:48:12 2017 +0100

    Update Meson args for gdk-pixbuf
    
    See https://bugzilla.gnome.org/show_bug.cgi?id=790995

 manifest.json |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/manifest.json b/manifest.json
index 74aacd7..6c3c537 100644
--- a/manifest.json
+++ b/manifest.json
@@ -642,7 +642,7 @@
                 "config-opts": ["--disable-default-make-check"]},
 
                {"src": "gnome:gdk-pixbuf",
-                "config-opts": ["-Dwith_man=false", "-Denable-gtk-doc=false"]},
+                "config-opts": ["-Dman=false", "-Ddocs=false"]},
 
                {"src": "gnome:gtk+",
                 "name": "gtk2",