RFR 8247675 : Update DateFormatterTest Copyright

[Chris Hegarty]

> On 16 Jun 2020, at 11:37, Rahul Yadav <rahul.r.yadav at oracle.com> wrote:
> 
> Hello,
> 
> Request to have my fix reviewed for issue:
> 
> JDK-8247675 :  Update DateFormatterTest Copyright
> 
> The fix updates the test DateFormatterTest, adds the missing
> comma(,) to the copyright year.
> 
> Issue:    https://bugs.openjdk.java.net/browse/JDK-8247675
> webrev: http://cr.openjdk.java.net/~ryadav/webrev_8247675/index.html
> 
LGTM.

-Chris.