update link to ChromeDriver (geerlingguy#128)

Author: jezmck

README.md

@@ -95,7 +95,7 @@ Any variable can be overridden in `config.yml`; see the supporting roles' docume
 
 Applications (installed with Homebrew Cask):
 
-  - [ChromeDriver](https://sites.google.com/a/chromium.org/chromedriver/)
+  - [ChromeDriver](https://sites.google.com/chromium.org/driver/)
   - [Docker](https://www.docker.com/)
   - [Dropbox](https://www.dropbox.com/)
   - [Firefox](https://www.mozilla.org/en-US/firefox/new/)