Add instructions how to redo/finish failed merge with local working directory.
b2ae81a7df29 already implemented this for branch merges.
<item>
<title>#tag|escape#</title>
<link>{urlbase}{url}rev/{node|short}</link>
<description><![CDATA[#tag|strip|escape|addbreaks#]]></description>
<pubDate>#date|rfc822date#</pubDate>
</item>