Fix instructions to update outdated Pygments Logtalk support and example command for using the Logtalk lexer with Prolog files
Fix instructions to update outdated Pygments Logtalk support and example command for using the Logtalk lexer with Prolog files

LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3,LogtalkDotOrg/logtalk3