[9] Review request: 8144768: Update version numbers in FX docs for JDK 9

[Kevin Rushforth]

Dave,

Please review this (hopefully) simple fix:

https://bugs.openjdk.java.net/browse/JDK-8144768
http://cr.openjdk.java.net/~kcr/8144768/webrev.01/

Thanks.

-- Kevin