Use more informative link to JS API.

The previous link in README.md just linked back to the formatted version of
README.md on github.io, so that link essentially went nowhere. The
actual API docs are hidden in a menu on that page.

This link goes straight to the module docs.

Author: juangj

javascript/node/selenium-webdriver/README.md

@@ -111,7 +111,7 @@ script provided with `selenium-webdriver`.
 ## Documentation
 
 API documentation is available online from the [Selenium project][api].
-Addition resources include
+Additional resources include
 
 - the #selenium channel on freenode IRC
 - the [[email protected]][users] list
@@ -213,7 +213,7 @@ specific language governing permissions and limitations
 under the License.
 
 [LTS]: https://github.com/nodejs/LTS
-[api]: http://seleniumhq.github.io/selenium/docs/api/javascript/
+[api]: http://seleniumhq.github.io/selenium/docs/api/javascript/module/selenium-webdriver/
 [cla]: http://goo.gl/qC50R
 [chrome]: http://chromedriver.storage.googleapis.com/index.html
 [gh]: https://github.com/SeleniumHQ/selenium/