link CC0 (I'd never heard of it)

diff --git a/doc/plugins/contrib/flattr.mdwn b/doc/plugins/contrib/flattr.mdwn
index fb532f44cfcf8c513027476d0e34e93b187f094a..f8f005c319dadbb8bda326143a10632413bc6c6a 100644 (file)
--- a/doc/plugins/contrib/flattr.mdwn
+++ b/doc/plugins/contrib/flattr.mdwn
@@ -8,7 +8,7 @@ The dynamic button does not require creation of the page on flattr before being
 
 I wrote some notes on [jonatan.walck.se](http://jonatan.walck.se/software/ikiwiki/plugin/flattr/) and put the source here: [flattr.pm](http://jonatan.walck.se/software/ikiwiki/flattr.pm)
 
-This plugin is licensed under CC0.
+This plugin is licensed under [CC0](http://creativecommons.org/publicdomain/zero/1.0/) (public domain).
 
 # Usage #