CMake: Fix the comment about versions. [skip ci]

[tcpdump] / tests / beep-oobr.out

    1  1995-08-15 05:27:12.808464432 unknown ip 3
    2  1995-08-15 05:27:12.808464432 IP6 3030:3030:3030:3030:3030:3030:3030:3030.10288 > 3030:3030:3030:3030:3030:3030:3030:3030.12336: Flags [.U], seq 808464432:808476740, ack 808464432, win 12336, urg 12336, options [eol], length 12308 [remaining caplen(24) < header length(28)] [|tcp]