Describe the bug, including details regarding any error messages, version, and platform.

https://github.com/apache/arrow/tree/main/go#performance has a broken reference to https://github.com/apache/arrow/blob/main/go/arrow/internal/cpu/README.md

Please kindly fix the README.md with the updated reference/link. The SIMD/AVX section is quite useful, especially for the cloud env with the modern Intel/AMD/Graviton CPU types.

Thanks

Component(s)

Benchmarking, C++, Documentation, Go