Typos in theme pak192comic.tab and pak192comicxxl.tab

While using the pak192.comic theme in Extended, I noticed the following error and warning messages:

`ERROR: tabfile_t::find_parameter_expansion: Found invalid character '-' in key of parameter expansion (Only alphanumeric characters, '.' and '_' allowed)
For help with this error or to file a bug report please see the Simutrans forum:
https://forum.simutrans.com`
`Warning: tabfile_t::read: No data in " "`

Based on [this forum post](https://forum.simutrans.com/index.php?msg=180548), I suspect that the `font-size` in line 15 should be `font_size` (and also in pak192comicxxl.tab line 26).

`ERROR: tabfile_t::find_parameter_expansion: Found invalid character ' ' in key of parameter expansion (Only alphanumeric characters, '.' and '_' allowed)
For help with this error or to file a bug report please see the Simutrans forum:
https://forum.simutrans.com`

Possibly an artifact of the previous warning?

`Warning: tabfile_t::read: No data in "gui_color_ticker_divider #cfb094"`

I think it's just a missing `=` in line 97 (pak192comicxxl.tab line 107)?

(This post will inevitably contain a typo too, in line with [Muphry's Law](https://en.wikipedia.org/wiki/Muphry%27s_law)!)