Remove references to _.

flatten.js

@@ -4,14 +4,13 @@ import baseFlatten from './_baseFlatten.js';
  * Flattens `array` a single level deep.
  *
  * @static
- * @memberOf _
  * @since 0.1.0
  * @category Array
  * @param {Array} array The array to flatten.
  * @returns {Array} Returns the new flattened array.
  * @example
  *
- * _.flatten([1, [2, [3, [4]], 5]]);
+ * flatten([1, [2, [3, [4]], 5]]);
  * // => [1, 2, [3, [4]], 5]
  */
 function flatten(array) {