Chapter about shard communication is unclear

[Sheepolution]

Is your feature request related to a problem? Please describe.

It took me way too long to figure out that to communicate between shards (i.e. to have one shard communicate something to all other shards) is done by making use of manager.broadcast and process.on. This info is not available in the chapter about shard communication.

Describe the solution you'd like

Information or a code sample that roughly goes like this:

manager.spawn()
    .then(shards => {
        shards.forEach(shard => {
            shard.on('message', message => {
                manager.broadcast(message);
            });
        });
    })
    .catch(console.error);

process.on('message', (message: string) => {
    const data = JSON.parse(message);
    console.log(data.message);
});

process.send(JSON.stringify({ message: 'Hello World!'}));

And if I'm doing somehting wrong here, well I guess it's because the guide didn't teach me.

Describe alternatives you've considered

No response

Additional notes

No response