refactor(Sharding): Update Shard#broadcastEval to v13 syntax.

[WiseDevHelper]

Please describe the changes this PR makes and why it should be merged:

Demo

This PR updates the Sharding section of the guide to be up-to-date with the breaking change ShardingManager#broadcastEval received in discordjs/discord.js#5756. This change was made to fix an RCE vulnerability explained in this repo.

A lot of things might need to be adjusted/fixed/rewritten, and I will happy to do so when suggested.

Status

• Update Sharding.
  • Main page.
  • Addtional Information.
  • Extended Changes.
• Add info about context.
• Update code samples.
  • Getting Started.
  • Extended Changes.

[Danktuary]

A few nitpicks, looks good otherwise 👍🏼

[WiseDevHelper]

Applied! 👍

For some reason, there is no spacing between the heading and content here:

How can we fix this?

[Danktuary]

Oh, that's strange. Looks fine at a glance, but maybe it's because <DocsLink> is used for the first word. Try restructuring the sentence to One of the most common sharding utility methods you'll be using is <DocsLink path="class/ShardClientUtil?scrollTo=fetchClientValues">Shard#fetchClientValues</DocsLink>. Not sure why that would cause that though.

If that doesn't work, just add a <br /> before the paragraph.

[WiseDevHelper]

Oh, that's strange. Looks fine at a glance, but maybe it's because <DocsLink> is used for the first word. Try restructuring the sentence to One of the most common sharding utility methods you'll be using is <DocsLink path="class/ShardClientUtil?scrollTo=fetchClientValues">Shard#fetchClientValues</DocsLink>. Not sure why that would cause that though.

This worked! 👍

[kyranet]

Please don't just remove quotes, that's not how you translate it.

[almostSouji]

Also needs to address code samples for sharding (remove v11/v12 folders)

[Danktuary]

Replacing the .broadcastEval(client => ...) with .broadcastEval(c => ...), because client is already declared in the upper scope.