Update readme

Author: maciejmalecki

README.md

@@ -11,7 +11,7 @@ How to use this image, check here: https://c64lib.github.io/gradle-retro-assembl
 
 ## Used software
 This docker image makes use of the following 3rd party software:
-* Debian Buster.
+* Debian.
 * Vice - the Vertasile Commodore Emulator (see https://vice-emu.sourceforge.io/).
 * Goattracker - a crossplatform music editor for creating Commodore 64 music (see https://sourceforge.net/projects/goattracker2/).
 * Exomizer - a crossplatform cruncher for 8bit machines (see https://bitbucket.org/magli143/exomizer/wiki/Home).