[PATCH] mshtml/tests: Fix the spelling of an ok() message.

[Marvin]

Hi,

While running your changed tests, 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=58102

Your paranoid android.


=== w7pro64 (task log) ===

Task errors:
The previous 1 run(s) terminated abnormally