doc: add util.types.isArrayBufferView()

This function was added by nodejs#15663, but was never documented.
This commit documents it.

doc/api/util.md

@@ -1255,6 +1255,25 @@ util.types.isAnyArrayBuffer(new ArrayBuffer());  // Returns true
 util.types.isAnyArrayBuffer(new SharedArrayBuffer());  // Returns true
 ```
 
+### `util.types.isArrayBufferView(value)`
+<!-- YAML
+added: v10.0.0
+-->
+
+* `value` {any}
+* Returns: {boolean}
+
+Returns `true` if the value is an instance of one of the [`ArrayBuffer`][]
+views, such as typed array objects or [`DataView`][].  Equivalent to
+[`ArrayBuffer.isView()`][].
+
+```js
+util.types.isArrayBufferView(new Int8Array());  // true
+util.types.isArrayBufferView(Buffer.from('hello world')); // true
+util.types.isArrayBufferView(new DataView(new ArrayBuffer(16)));  // true
+util.types.isArrayBufferView(new ArrayBuffer());  // false
+```
+
 ### `util.types.isArgumentsObject(value)`
 <!-- YAML
 added: v10.0.0