Add missing callback parameter to dgram.Socket.bind() and update dgram.Socket.send()

node/node.d.ts

@@ -763,8 +763,8 @@ declare module "dgram" {
     export function createSocket(type: string, callback?: Function): Socket;
 
     interface Socket extends events.EventEmitter {
-        send(buf: Buffer, offset: number, length: number, port: number, address: string, callback?: Function): void;
-        bind(port: number, address?: string): void;
+        send(buf: Buffer, offset: number, length: number, port: number, address: string, callback?: (error: Error, bytes: number)): void;
+        bind(port: number, address?: string, callback?: () => void): void;
         close(): void;
         address: { address: string; family: string; port: number; };
         setBroadcast(flag: boolean): void;