kernel32/tests: Fix a typo in comment

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=23020

Your paranoid android.


=== w864 (64 bit process) ===
process.c:1192: Test failed: expected 1, got 0
process.c:1195: Test failed: Child process termination
process.c:1199: Test failed: Toolhelp:cntUsage expected 0, but got 1
process.c:1200: Test failed: Toolhelp:th32DefaultHeapID expected 0, but got 1
process.c:1201: Test failed: Toolhelp:th32ModuleID expected 0, but got 1
process.c:1202: Test failed: Toolhelp:th32ParentProcessID expected 280, but got 0
process.c:1204: Test failed: Toolhelp:dwFlags expected 0, but got 1