docs($browser): add jsdoc tags and fix typo

Author: btesser

src/ng/browser.js

@@ -238,10 +238,14 @@ function Browser(window, document, $log, $sniffer) {
   //////////////////////////////////////////////////////////////
 
   /**
+   * @name ng.$browser#baseHref
+   * @methodOf ng.$browser
+   * 
+   * @description
    * Returns current <base href>
    * (always relative - without domain)
    *
-   * @returns {string=}
+   * @returns {string=} current <base href>
    */
   self.baseHref = function() {
     var href = baseElement.attr('href');