Add x86_64 dependency note to pip installation
Add x86_64 dependency note to pip installation

Currently non x86_64 linux architectures are not supported, see #7097 for request to change this. This can lead to installation confusion, as jax will install, but jaxlib will not. For example see #12307. This adds a note to the install sections for the relevant pip wheels.

google/jax,google/jax,google/jax,google/jax