Correct 'seconds' to 'milliseconds', a cosmetic error that's been there since...

Correct 'seconds' to 'milliseconds', a cosmetic error that's been there since the iseeking_example was originally copied over from reference.



git-svn-id: https://svn.xiph.org/trunk/Tremor@17535 0101bb08-14d6-0310-b084-bc0e0c8e3800