Achievements: Fixed typo

Thanks, Михаил Новоселов!

Author: tillkamppeter

_pages/achievements.md

@@ -21,7 +21,7 @@ So thanks to MandrakeSoft/Mandriva, the Linux Foundation, and Canonical to make
 
 
 ## All free drivers to be used with CUPS
-My first task back in 2000 at MandrakeSoft was to switch over Mandrake Linux from LPD ro CUPS, and this was not only making the first RPM packages of CUPS, but also to make sure that for the users of the first ever Linux distribution which uses CUPS as printing system all hardware (printers) which was supported in the previous distro version (using LPD) is still supported. THis meant especially that I need PPD files and CUPS filters (wrappers) for **all** drivers, and there were already many in the free software printing stone age ...
+My first task back in 2000 at MandrakeSoft was to switch over Mandrake Linux from LPD to CUPS, and this was not only making the first RPM packages of CUPS, but also to make sure that for the users of the first ever Linux distribution which uses CUPS as printing system all hardware (printers) which was supported in the previous distro version (using LPD) is still supported. THis meant especially that I need PPD files and CUPS filters (wrappers) for **all** drivers, and there were already many in the free software printing stone age ...
 
 Printer drivers were not such a well-defined thing as current CUPS drivers consisting of filters and PPD files or even Printer Applications are. They somehow turned a standard input format (usually PostScript or some bitmap format which Ghostscript was able to generate) into what the printer needs, but this was all what made a software be a printer driver. Drivers could be some output device compiled into Ghostscript, or some tiny, simple filter executable which turns Ghostscript's output into at least one of the input data formats of the printer, or one had Ghostscript Uniprint files to use the first data-driven Ghostscript driver, ... But anything machine-readable which tells how to use the driver and which user-settable options are there was usually not included. Here third-party projects like Magic Filters or apsfilter came into play ...