http://ftp-master.debian.org/rss/removals.rss - Fix quoting problem with <pre>

Using qq[<pre>$body</pre>] produces "<pre>"
which seems to broken inside RSS readers. If the result looks like
"<pre>" then it seems to work fine.

Signed-off-by: Michael Prokop <mika@grml.org>
Signed-off-by: Joerg Jaspert <joerg@debian.org>