Fix macos setup script for M1

zsh/.virtual_env_config.zsh_mac.example

@@ -1,4 +1,4 @@
 export WORKON_HOME=~/python-envs
 export VIRTUALENVWRAPPER_VIRTUALENV=/usr/local/bin/virtualenv
 mkdir -p $WORKON_HOME
-source /usr/local/bin/virtualenvwrapper.sh
+source /opt/homebrew/bin/virtualenvwrapper.sh