[Lazarus] Building the Lazarus docs

[Felipe Monteiro de Carvalho]

So I use  update_lcl_html.sh  ?

A bit unintuitive, not? I have never built the docs, so I have nothing
to be updated. I'd expect the script to be named build_lcl_html.sh,
and preferably directly in the docs dir instead of the html dir to be
easier to find.

-- 
Felipe Monteiro de Carvalho