ddraw/tests: A spelling fix in an ok() message.

[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=27624

Your paranoid android.


=== w1064 (32 bit d3d) ===
d3d.c:2051: Test failed: Unexpected destination texture level pixels; 2031 differences at 0 level
d3d.c:2051: Test failed: Unexpected destination texture level pixels; 518 differences at 1 level
d3d.c:2051: Test failed: Unexpected destination texture level pixels; 138 differences at 2 level
d3d.c:2051: Test failed: Unexpected destination texture level pixels; 46 differences at 3 level
d3d.c:2235: Test failed: Unexpected destination texture level pixels; 257 differences
d3d.c:2382: Test failed: Unexpected destination texture level pixels; 256 differences at 2 level
d3d.c:2382: Test failed: Unexpected destination texture level pixels; 64 differences at 3 level
d3d.c:2382: Test failed: Unexpected destination texture level pixels; 16 differences at 4 level
d3d.c:2382: Test failed: Unexpected destination texture level pixels; 4 differences at 5 level