[xml/sgml-pkgs] Bug#766884: validity error : ID already defined

[積丹尼 Dan Jacobson]

Workaround for

validity error : ID bottom already defined
	<a id="bottom" name="bottom" accesskey="z"></a>

for
libxml2:
  Installed: 2.9.4+dfsg1-1+b1

just remove the name="bottom" in the input.