[libsigcplusplus] .doap: Correct the web site URL.

[Murray Cumming <murrayc src gnome org>]

commit 6f44c8f682794b161411515ff6663788558f8084
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Mar 7 11:14:24 2016 +0100

    .doap: Correct the web site URL.
    
    Though we really must stop using sourceforge even for the web site.

 libsigcplusplus.doap |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libsigcplusplus.doap b/libsigcplusplus.doap
index ac695d2..5240e73 100644
--- a/libsigcplusplus.doap
+++ b/libsigcplusplus.doap
@@ -11,8 +11,8 @@ It allows you to define signals and to connect those signals to any
 callback function, either global or a member function, regardless of
 whether it is static or virtual.
 
-libsigc++ is used by glibmm and gtkmm to wrap Glib and GTK+ signals.</description>
-  <homepage rdf:resource="http://www.gtkmm.org/"; />
+libsigc++ is also used by glibmm and gtkmm to wrap Glib and GTK+ signals.</description>
+  <homepage rdf:resource="http://libsigc.sourceforge.net/"; />
   <bug-database rdf:resource="http://bugzilla.gnome.org/browse.cgi?product=libsigc%2B%2B"; />
   <mailing-list rdf:resource="mailto:libsigc-list gnome org" />
   <category rdf:resource="http://api.gnome.org/doap-extensions#core"; />