String: Update the codecs URL in encode/decode's help
String: Update the codecs URL in encode/decode's help

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

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