RFR: fix broken links in README of jtreg

[Jonathan Gibbons]

Hi,

I'll take care of this; thanks for the report.

-- Jon


On 7/25/18 8:18 AM, qudongfang wrote:
> Hi,
>
> I found two broken links in README and build.html 
> <http://openjdk.java.net/jtreg/build.html>.
>
> I think it'd be better to be fixed.
>
> Could some help me with this?
>
> webrev file link stored in google drive
> <https://drive.google.com/open?id=1psnsSFkdEbtOlPqsoAYvYE4eyXsuEXVG>
>