[GRASS5] [bug #2942] (grass) typos in Win installation instructions

[Hamish]

> this bug's URL: http://intevation.de/rt/webrt?serial_num=2942
> -------------------------------------------------------------------------
> 
> Subject: typos in Win installation instructions
..
> Downloaded Grass 5.4.0 and tried to install it following instructions on:
> http://grass.itc.it/grass54/binary/mswindows_cygwin/
> 
> Two typos in following section:


fixed.



Hamish