Updating link to change in openSUSE:Factory/graphviz revision 36.0

OBS-URL: https://build.opensuse.org/package/show/graphics/graphviz?expand=0&rev=a76e592d20572ad7b7fea80144ae1d63

graphviz.spec

@@ -25,7 +25,7 @@ BuildRequires:  xorg-x11-libICE-devel xorg-x11-libSM-devel xorg-x11-libXpm-devel
 BuildRequires:  xorg-x11-libX11-devel xorg-x11-libXext-devel xorg-x11-libXmu-devel xorg-x11-libXt-devel
 PreReq:         /bin/rm
 Version:        2.26.3
-Release:        3
+Release:        4
 AutoReqProv:    on
 Summary:        Graph Visualization Tools
 Group:          Productivity/Graphics/Visualization/Graph
@@ -36,6 +36,7 @@ Patch3:         graphviz-neato_splines.patch
 Patch11:        graphviz-2.20.2-interpreter_names.patch
 Patch13:        graphviz-stddefs.patch
 Patch14:        graphviz-gd_png_check_sig.patch
+Patch15:        graphviz-wrong_index.patch
 Url:            http://www.graphviz.org/
 License:        IBM Public License ..
 Prefix:         /usr
@@ -73,7 +74,8 @@ Requires:       libstdc++-devel tk-devel
 The graphviz-devel package contains all that's necessary for developing
 programs that use the graphviz libraries including man3 pages.
 
-
+Note: If you need output in png format you also need to install
+      graphviz-gnome.
 
 Authors:
 --------
@@ -92,6 +94,7 @@ Authors:
 %patch11
 %patch13
 %patch14
+%patch15
 # Fix path in generated man pages
 sed -e 's$@LIB_DIR@$%{_libdir}$g' tclpkg/gv/gv_doc_langs.tcl >tclpkg/gv/gv_doc_langs.tcl.new && mv tclpkg/gv/gv_doc_langs.tcl.new tclpkg/gv/gv_doc_langs.tcl
 # remove broken macros