[ci skip] README: Correct reference to old project version
[ci skip] README: Correct reference to old project version

otrosien/sonar-perl,sonar-perl/sonar-perl,otrosien/sonar-perl,otrosien/sonar-perl,otrosien/sonar-perl,sonar-perl/sonar-perl,sonar-perl/sonar-perl,otrosien/sonar-perl,sonar-perl/sonar-perl,sonar-perl/sonar-perl