minor: [checkstyle-tester] fix paths in projects-to-test-on.properties
minor: [checkstyle-tester] fix paths in projects-to-test-on.properties

rnveach/contribution,MEZk/contribution,checkstyle/contribution,MEZk/contribution,checkstyle/contribution,Vladlis/contribution,rnveach/contribution,MEZk/contribution,checkstyle/contribution,checkstyle/contribution,rnveach/contribution,checkstyle/contribution,MEZk/contribution,Vladlis/contribution,rnveach/contribution,rnveach/contribution,Vladlis/contribution,Vladlis/contribution,rnveach/contribution,MEZk/contribution,checkstyle/contribution,MEZk/contribution,Vladlis/contribution,checkstyle/contribution,rnveach/contribution,Vladlis/contribution