doc: buffer: fix typo on Buffer.copyBytesFrom( offset option

PR-URL: nodejs#57015
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/buffer.md

@@ -1098,7 +1098,7 @@ added:
 -->
 
 * `view` {TypedArray} The {TypedArray} to copy.
-* `offset` {integer} The starting offset within `view`. **Default:**: `0`.
+* `offset` {integer} The starting offset within `view`. **Default:** `0`.
 * `length` {integer} The number of elements from `view` to copy.
   **Default:** `view.length - offset`.
 * Returns: {Buffer}