Possible correction to installation instructions

I’m a new user, and I recently successfully installed Gromacs on my MacBook Pro, macOS Montery 12.4. I followed the steps given on your webpage
In particular the quick and dirty installation.
Everything worked quite cleanly until the very last step:
the following command doesn’t work:
% source /usr/local/gromacs/bin/GMXRC
source: no such file or directory: /usr/local/gromacs/bin/GMXRC

So instead I did the following:
% /usr/local/bin/GMXRC
Actually this did work, though I had a little issue with:
% source /usr/local/bin/GMXRC
complete:13: command not found: compdef
I believe this is some issue with Mac and it was easily solved by adding these two lines
autoload -Uz compinit
to my .zshrc file which I found in my home directory by typing:
% cd
% ls -a
I hope this is useful to someone.