Typo in cl_hr_external_semaphore

In the sample for clEnqueueWaitSemaphoreKHR, there is a typo where 6 arguments are passed, not 7 https://registry.khronos.org/OpenCL/sdk/3.0/docs/man/html/cl_khr_external_semaphore.html

Open the external semaphore sample for clEnqueueWaitSemaphoreKHR at the linked reference page and compare the call's argument list with the documented signature. Correct the sample so it passes six arguments, then verify the rendered example no longer shows seven.

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