Clarify the M1 shell instructions
Clarify the M1 shell instructions

The instructions seemed to encourage the misconception that `arch -x86_64 zsh` somehow modifies the default architecture for `zsh`, an operation which would need to be "reverted".
In fact, `arch -x86_64 …` merely spawns a new process under the selected architecture.
ljharb/nvm,creationix/nvm,ljharb/nvm,creationix/nvm,PeterDaveHello/nvm,PeterDaveHello/nvm