[gdk-pixbuf] meson: Use the right dependency for gtkdoc

[Emmanuele Bassi <ebassi src gnome org>]

commit f29e83da063f73324a1e54dbc89d0b1d30ba4361
Author: Jan Alexander Steffens (heftig) <jan steffens gmail com>
Date:   Mon Aug 7 21:39:49 2017 +0200

    meson: Use the right dependency for gtkdoc
    
    The gdkpixbuf_dep pulls in the right include dir. This fixes the
    following error:
    
        gdk-pixbuf-scan.c:7:10: fatal error: gdk-pixbuf/gdk-pixbuf.h: No such file or directory
    
    https://bugzilla.gnome.org/show_bug.cgi?id=785964

 docs/reference/gdk-pixbuf/meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/reference/gdk-pixbuf/meson.build b/docs/reference/gdk-pixbuf/meson.build
index 535ab52..b8d6f22 100644
--- a/docs/reference/gdk-pixbuf/meson.build
+++ b/docs/reference/gdk-pixbuf/meson.build
@@ -33,7 +33,7 @@ if get_option('with_docs')
                  gdk_pixbuf_inc,
                  gdkpixbuf_xlib_inc,
                ],
-               dependencies: gdk_pixbuf_deps,
+               dependencies: gdkpixbuf_dep,
                gobject_typesfile: 'gdk-pixbuf.types',
                scan_args: [
                  '--deprecated-guards="GDK_PIXBUF_ENABLE_BROKEN|GDK_PIXBUF_DISABLE_DEPRECATED"',