[tldoc] [tldev] updated Polish guide

[Karl Berry]

    I've just finally managed to update the Polish translation of
    the TL guide (rev 15442).

Great, thanks.

    in "Release history" section I'd recomend changing:

I agree the bad links should be fixed, although I am tempted to replace
them with url's to the tds.html on the web, instead of bothering with
\CDref.  It makes no practical difference for these obscure links in a
history section.

Well, anyway, I'll fix the English.

Thanks,
karl