escapeMarkdown does not escape backslashes

[GrantGryczan]

Which package is this bug report for?

discord.js

Issue description

I wasn't sure if this counts as a bug or a feature suggestion, but I expected escapeMarkdown to also escape the \ character, and it does not, leaving me to have to write .replace(/\\/g, '\\\\') everywhere I call escapeMarkdown (or a function of my own that does the same).

There should perhaps also be a separate function for only escaping backslashes, like escapeEscapes.

Code sample

const { escapeMarkdown } = require('discord.js');

console.log(escapeMarkdown('\\')); // Outputs '\\' instead of '\\\\'

Package version

14.5.0

Node.js version

16.13.2

Operating system

Windows

Priority this issue should have

Low (slightly annoying)

Which partials do you have configured?

No Partials

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I have tested this issue on a development release

No response