change: proper example for interfaces

.github/CONTRIBUTING.md

@@ -46,18 +46,33 @@
 Example:
 
 ```ts
+/** https://discord.com/developers/docs/resources/user#user-object */
 export interface User {
+  /** The user's id */
   id: string;
+  /** The user's username, not unique across the platform */
   username: string;
+  /** The user's 4-digit discord-tag */
   discriminator: string;
+  /** The user's avatar hash */
   avatar: string | null;
+  /** Whether the user belongs to an OAuth2 application */
   bot?: boolean;
+  /** Whether the user is an Official Discord System user (part of the urgent message system) */
   system?: boolean;
+  /** Whether the user has two factor enabled on their account */
   mfaEnabled?: boolean;
+  /** The user's chosen language option */
   locale?: string;
+  /** Whether the email on this account has been verified */
   verified?: boolean;
-  email?: string;
-  flags?: number;
-  premiumType?: number;
+  /** The user's email */
+  email?: string | null;
+  /** The flags on a user's account */
+  flags?: DiscordUserFlags;
+  /** The type of Nitro subscription on a user's account */
+  premiumType?: DiscordPremiumTypes;
+  /** The public flags on a user's account */
+  publicFlags?: DiscordUserFlags;
 }
 ```