Fix sticker pack banner CDN path including specific application ID

[FinOCE]

Noticed this path has an actual application ID in it instead of the hyperlink to the application object. It's obvious enough what it means, but it you took it at face value you'd be trying to fetch app assets off some random bot not your own lol

[Lulalaby]

Iirc it was because this route is exclusive for nitro sticker packs and the banner images were saved in that specific application. Might be wrong but I remember something along these lines.

[FinOCE]

Iirc it was because this route is exclusive for nitro sticker packs and the banner images were saved in that specific application. Might be wrong but I remember something along these lines.

Ah that's funny. A note somewhere mentioning that would be nice but I'll close the PR :)

[Lulalaby]

Yeah, GET https://canary.discord.com/api/v10/applications/710982414301790216/rpc shows

{
	"id": "710982414301790216",
	"name": "Stickers",
	"icon": null,
	"description": "",
	"summary": "",
	"type": null,
	"is_monetized": false,
	"is_verified": false,
	"is_discoverable": false,
	"hook": true,
	"storefront_available": false,
	"integration_types_config": {
		"0": {}
	},
	"verify_key": "4be0b338ea2e6b55ca654be7d08534b99260888d08b7f2636cca1a962a5cd21b",
	"flags": 0
}