Remove references to _.

isFunction.js

@@ -11,17 +11,16 @@ const proxyTag = '[object Proxy]';
  * Checks if `value` is classified as a `Function` object.
  *
  * @static
- * @memberOf _
  * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is a function, else `false`.
  * @example
  *
- * _.isFunction(_);
+ * isFunction(_);
  * // => true
  *
- * _.isFunction(/abc/);
+ * isFunction(/abc/);
  * // => false
  */
 function isFunction(value) {