Remove references to _.

upperCase.js

@@ -4,20 +4,19 @@ import createCompounder from './_createCompounder.js';
  * Converts `string`, as space separated words, to upper case.
  *
  * @static
- * @memberOf _
  * @since 4.0.0
  * @category String
  * @param {string} [string=''] The string to convert.
  * @returns {string} Returns the upper cased string.
  * @example
  *
- * _.upperCase('--foo-bar');
+ * upperCase('--foo-bar');
  * // => 'FOO BAR'
  *
- * _.upperCase('fooBar');
+ * upperCase('fooBar');
  * // => 'FOO BAR'
  *
- * _.upperCase('__foo_bar__');
+ * upperCase('__foo_bar__');
  * // => 'FOO BAR'
  */
 const upperCase = createCompounder((result, word, index) =>