docs: add chromedriver issue tracker to readme

Author: mhanberg

README.md

@@ -644,3 +644,7 @@ $ WALLABY_DRIVER=selenium mix test
 # All tests
 $ mix test.all
 ```
+
+### Helpful Links
+
+- [ChromeDriver Issue Tracker](https://issues.chromium.org/issues?q=status:open%20componentid:1608258&s=created_time:desc)