User Guide link is not getting focused when traversed by the tab key from the keyboard.

Please see the attached dialog

To Reproduce:

1. Launch JConsole
2. Click on the Help Menu, and select About
3. Try to access the link "http://www.java.com" by using only the keyboard.

Expected:

Link should be focused, and clicking Space/Enter should take to the user guide as it is done using a mouse click

Actual:

Link is not getting the focus.