doc: add documentation for blob.bytes() method

Author: jmsb02

doc/api/buffer.md

@@ -545,7 +545,7 @@ The `blob.bytes()` method returns the byte of the `Blob` object as a `Buffer`.
 ```js
 const blob = new Blob(['hello']);
 console.log(blob.bytes()); // Outputs: <Buffer 68 65 6c 6c 6f>
-
+```
 
 ### `blob.stream()`