RFR : 8223733 : "Detail" in headings should be "Details"

[Priya Lakshmi Muthuswamy]

Hi,

Kindly review trivial fix for 
https://bugs.openjdk.java.net/browse/JDK-8223733
webrev : http://cr.openjdk.java.net/~pmuthuswamy/8223733/webrev.00/
Thanks,
Priya