docs: WebSocketShard#send and TextBasedChannel#send (#5998)

src/structures/interfaces/TextBasedChannel.js

@@ -106,7 +106,7 @@ class TextBasedChannel {
   /**
    * Sends a message to this channel.
    * @param {string|MessagePayload|MessageOptions} options The options to provide
-   * @returns {Promise<Message|Message[]>}
+   * @returns {Promise<Message>}
    * @example
    * // Send a basic message
    * channel.send('hello!')

typings/index.d.ts

@@ -2277,7 +2277,7 @@ declare module 'discord.js' {
     private _cleanupConnection(): void;
     private _emitDestroyed(): void;
 
-    public send(data: unknown): void;
+    public send(data: unknown, important?: boolean): void;
 
     public on(event: 'ready' | 'resumed' | 'invalidSession', listener: () => Awaited<void>): this;
     public on(event: 'close', listener: (event: CloseEvent) => Awaited<void>): this;