Update Usage.md

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 ### CPU Load
 This test plays a tone and alternates between low and high workloads.
 It exercises the kernel's CPU scheduler, which controls CPU frequency and core migration.
-Moredetails on the [wiki/OboeTester_DynamicCpuLoad](https://github.com/google/oboe/wiki/OboeTester_DynamicCpuLoad).
+More details on the [wiki/OboeTester_DynamicCpuLoad](https://github.com/google/oboe/wiki/OboeTester_DynamicCpuLoad).