The message coll-return_to_collection should not have an <a href="yadda"> in it, as it is not treated as html but actually as wikitext. It should use external link syntax.
Thus user is shown brokeness
Reported on enwikipedia village pump by Prouder Mary ( http://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=524424807#Broken_link_on_Special:Book )
Version: unspecified
Severity: major
URL: http://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_%28technical%29&oldid=524424807#Broken_link_on_Special:Book