[9] Review request for 8043967: Fix doclint warnings for java.awt

[alexander stepanov]

Hello,

Could you please review the fix for the following bug:
https://bugs.openjdk.java.net/browse/JDK-8043967

Webrev:
http://cr.openjdk.java.net/~avstepan/8043967

Just a cleanup of javadoc to avoid doclint warnings.

Thanks,
Alexander