news.html: fix typo in 2015.05-rc3 link

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

docs/website/news.html

@@ -172,7 +172,7 @@
 	  file for details.</p>
 	<p>Head to the <a href="/downloads/">downloads page</a> to
 	  pick up
-	  the <a href="/downloads/buildroot-2015.02-rc5.tar.bz2">2015.05-rc3
+	  the <a href="/downloads/buildroot-2015.05-rc3.tar.bz2">2015.05-rc3
 	    release candidate</a>, and report any problems found to
 	  the <a href="lists.html">mailing list</a>
 	  or <a href="https://bugs.uclibc.org">bug tracker</a>.</p>