Fix incorrect calculation in AampTime test comment

[Copilot]

Corrects an error in the test documentation where the comment stated "90000000 ticks at 90kHz = 1000000 seconds" but the correct calculation is 90000000 / 90000 = 1000 seconds.

Changes:

• Updated comment in validateAampTimeOverloads.cpp line 566 to correctly state "90000000 ticks at 90kHz = 1000 seconds"
• The test logic and expected value (1000000 ms) were already correct and unchanged

// Before:
// Value: 90000000 ticks at 90kHz
// Calculation: (90000000 * 1000) / 90000 = 90000000000 / 90000 = 1000000 ms

// After:
// Value: 90000000 ticks at 90kHz = 1000 seconds
// Calculation: (90000000 * 1000) / 90000 = 90000000000 / 90000 = 1000000 ms

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