Update README.windows-exe

[Tontonitch]

Some very small changes and a working config example

[ckujau]

I just compiled check_logfiles v3.8.1.4 on a Windows 10 (64-bit, v10.0.16299.125, strawberry-perl-5.26.1.1) machine and while the compilation of PAR::Packer produced some warnings, it went through and I didn't even attempt the whole routine from 3a and 3b. However, the actual compilation of check_logfiles then failed as it complained that Win32::NetResource and Date::Manip were missing. After installing both via CPAN the compilation was successful and produced a working binary. So, maybe adding those to the requirements in that README would fix that?