RFR:JDK-8199268:docs/api/jdk.javadoc/com/sun/javadoc/package-summary.html contain low contrast text.

[Priya Lakshmi Muthuswamy]

Hi,

Please review a simple fix for 
https://bugs.openjdk.java.net/browse/JDK-8199268
webrev : http://cr.openjdk.java.net/~pmuthuswamy/8199268/webrev.00/
Thanks,
Priya