[gtk-doc: 1/2] README: fix Devhelp url

[Stefan Sauer <stefkost src gnome org>]

commit 31a6180209d358a680aa83cb602d50476e593966
Author: Aleksander Morgado <aleksander aleksander es>
Date:   Mon Feb 11 22:13:06 2019 +0100

    README: fix Devhelp url
    
    Imendio is long gone, and the old URL was returning a 404.

 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README b/README
index c1c2f59..7ff045c 100644
--- a/README
+++ b/README
@@ -17,7 +17,7 @@ From your source code comments GTK-Doc generates a Docbook XML document, which
 is then transformed into HTML and/or PDF.
 The generated HTML documentation can be browsed in an ordinary web browser or
 by using the special Devhelp API browser
-(see http://developer.imendio.com/wiki/Devhelp).
+(see https://wiki.gnome.org/Apps/Devhelp).
 
 Please use DoxBook XML instead of DocBook SGML - support for the later will be
 dropped.