docs(chatInputApplicationCommandMention): parameters are not nullable

[almeidx]

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

discord.js/packages/formatters/src/formatters.ts

Lines 230 to 240 in 8b70f49

	export function chatInputApplicationCommandMention<
	N extends string,
	G extends Snowflake | string,
	S extends Snowflake | string,
	I extends Snowflake,
	>(
	commandName: N,
	subcommandGroupName: G,
	subcommandName?: S,
	commandId?: I,
	): `</${N} ${G} ${S}:${I}>` | `</${N} ${G}:${S}>` | `</${N}:${G}>` {

Status and versioning classification:

• This PR only includes non-code changes, like changes to documentation, README, etc.

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[almeidx]

Actually only the first two are required

Meaning the rest of the parameters are optional, not nullable

[jaw0r3k]

Meaning the rest of the parameters are optional, not nullable

Ups yeah sorry