Add a [j] Asciidoc quote tag for linking directly to help doc tags.

vimperator/locale/en-US/asciidoc.conf

@@ -87,6 +87,7 @@ LOGO=<div style="text-align: center;"><span class="vimperator-logo"></span></div
 [c]=#command
 [m]=#mapping
 [a]=#argument
+[j]=#jump
 # FIXME: this prevents all asciidoc attribute processing
 # ^obviously it doesn't? --stepnem
 {|}=argument2
@@ -101,6 +102,7 @@ option=<a class="option" href="#">|</a>
 option2=<a class="option" href="#">'|'</a>
 command=<a class="command" href="#">|</a>
 mapping=<a class="mapping" href="#">|</a>
+jump=<a class="jump" href="#">|</a>
 argument=<span class="argument">|</span>
 # NOTE: in certain contexts the unescaped '#' is stripped. As we're ditching
 # asciidoc I won't bother investigating --djk