[8] Request for review: 8020091: Fix HTML doclint issues in java.io

[Jason Uh]

Hi Joe,

Please review this changeset, which fixes the HTML doclint issues in 
java.io.

Webrev: http://cr.openjdk.java.net/~juh/8020091/webrev.00/

No undesirable changes detected by specdiff.

Thanks!

Jason