When building LLVM, if multiple SDKs are installed in `/Library/Developer/CommandLineTools/SDKs`,
headers from multiple SDKs are picked, generating build errors as describe here:
https://github.com/bytecodealliance/wasm-micro-runtime/issues/1758.
Without disabling the bound checks (i.e. -DWAMR_DISABLE_HW_BOUND_CHECK=1)
when building `iwasm`, the `-g=127.0.0.1:1234` parameter makes the runtime crash.
Update the document to avoid the issues.
Signed-off-by: eloparco <eloparco@amazon.com>