Fix and minor improvements to the SWI-Prolog `logtalk` pack README file
Fix and minor improvements to the SWI-Prolog `logtalk` pack README file

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