Remove references to _.

isNil.js

@@ -2,20 +2,19 @@
  * Checks if `value` is `null` or `undefined`.
  *
  * @static
- * @memberOf _
  * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
  * @example
  *
- * _.isNil(null);
+ * isNil(null);
  * // => true
  *
- * _.isNil(void 0);
+ * isNil(void 0);
  * // => true
  *
- * _.isNil(NaN);
+ * isNil(NaN);
  * // => false
  */
 function isNil(value) {