patch plugin documentation to refer to directive pages

[ikiwiki] / doc / plugins / linkmap.mdwn

[[!template id=plugin name=linkmap author="[[Joey]]"]]
[[!tag type/meta]]
[[!tag type/slow]]

This plugin implements the [[ikiwiki/directive/linkmap]] [[ikiwiki/directive]].
The directive uses [graphviz](http://www.graphviz.org/) to generate a graph showing the links between a
set of pages in the wiki.