Vimwiki reader: improve handling of internal links.

1) Don't append `.html`
2) Add `wikilink` title

This mirrors behavior of other wiki readers.  Generally the
`.html` extension is not wanted.  It may be important for
output to HTML in certain circumstances, but it can always
be added using a filter that matches on links with title
`wikilink`.

Note that if you have a workflow that uses pandoc to convert
vimwiki to readable HTML pages, you may need to add such a
filter to reproduce current behavior.

Here is a filter that does the job:

```lua
function Link(el)
    if el.title == 'wikilink' then
      el.target = el.target .. ".html"
    end
    return el
end
```

Save this as `fixlinks.lua` and use with `--lua-filter fixlinks.lua`.

Closes #5414.

0 files changed, 0 insertions, 0 deletions