doc: remove unneeded new in Buffer example

PR-URL: nodejs/node#42682
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Akhil Marsonya <akhil.marsonya27@gmail.com>

doc/api/buffer.md

@@ -1512,7 +1512,7 @@ a `Buffer` is that in this case one needs to specify the `byteOffset` correctly:
 import { Buffer } from 'buffer';
 
 // Create a buffer smaller than `Buffer.poolSize`.
-const nodeBuffer = new Buffer.from([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
+const nodeBuffer = Buffer.from([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
 
 // When casting the Node.js Buffer to an Int8Array, use the byteOffset
 // to refer only to the part of `nodeBuffer.buffer` that contains the memory
@@ -1524,7 +1524,7 @@ new Int8Array(nodeBuffer.buffer, nodeBuffer.byteOffset, nodeBuffer.length);
 const { Buffer } = require('buffer');
 
 // Create a buffer smaller than `Buffer.poolSize`.
-const nodeBuffer = new Buffer.from([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
+const nodeBuffer = Buffer.from([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);
 
 // When casting the Node.js Buffer to an Int8Array, use the byteOffset
 // to refer only to the part of `nodeBuffer.buffer` that contains the memory