[geezword_tigrinya] Fix help CSS indentation level

[darcywong00]

Fixes CSS indentation of the geezword_tigrinya help file which blocked help deployment on keymanapp/help.keyman.com#2312 and keymanapp/help.keyman.com#2313

PHP Parse error: Invalid body indentation level (expecting an indentation level of at least 2) in ./keyboard/geezword_tigrinya/18.0/geezword_tigrinya.php on line 6

[DavidLRowe]

@dyacob I learned something new today (or maybe relearned something I'd forgotten)!

[dyacob]

Oh? Indentation matters?? I thought that was just for Python. @DavidLRowe new to me also, I don't think I ever knew. Thanks guys for catching and fixing this!

[mcdurdin]

For reference, it's because the END closing marker is indented -- and behaviour changed in recent versions of PHP.

https://stackoverflow.com/questions/55523412/invalid-body-indentation-level-expecting-an-indentation-level-of-at-least-4

[LornaSIL]

There's also an issue of mixing spaces and tabs for indentation. I don't think this one had that problem, but I need to remember to check that also!