Use '2x' to reference Python version in README.
Use '2x' to reference Python version in README.

Signed-off-by: James Vega <91ae71a1168cea0b65ac9975da69d5a7753116be@users.sourceforge.net>

raboof/supybot,Ban3/Limnoria,prashantpawar/supybot-rothbot,frumiousbandersnatch/supybot-code,mazaclub/mazabot-core,ProgVal/Limnoria-test,haxwithaxe/supybot,jeffmahoney/supybot,Ban3/Limnoria,buildbot/supybot,ProgVal/Limnoria-test,mazaclub/mazabot-core