Remove references to _.

isSymbol.js

@@ -8,17 +8,16 @@ const symbolTag = '[object Symbol]';
  * Checks if `value` is classified as a `Symbol` primitive or object.
  *
  * @static
- * @memberOf _
  * @since 4.0.0
  * @category Lang
  * @param {*} value The value to check.
  * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
  * @example
  *
- * _.isSymbol(Symbol.iterator);
+ * isSymbol(Symbol.iterator);
  * // => true
  *
- * _.isSymbol('abc');
+ * isSymbol('abc');
  * // => false
  */
 function isSymbol(value) {