process_see_reference: look for name.s before functions (#257)
process_see_reference: look for name.s before functions (#257)

The `@see` reference for an item like the following might point to
itself, although this is in `@module tag` and there is
`tag.master_width_factor` also.

```
--- The default master width factor
--
-- @beautiful beautiful.master_width_factor
-- @param number (default: 0.5)
-- @see master_width_factor
-- @see gap
```

https://github.com/awesomeWM/awesome/blob/548b15e883836a2f784a4b163b097c3f523a68e0/lib/awful/tag.lua#L564-L569

This patch makes it look for the absolute reference using the module
name first.
stevedonovan/LDoc