RFR: 8178014: CryptoPolicyParser's API comment contains < and > characters

[Brad R. Wetmore]

Kumar (+ anyone else),

Simple review for fixing two errors when building javadocs with -private 
(non-default option).

Also, the <a> 'name' attribute is no longer supported in HTML5.  So 
doing a trivial name->id rename to HTML5 cleanup the XML DSig docs.

    https://bugs.openjdk.java.net/browse/JDK-8178014
    http://cr.openjdk.java.net/~wetmore/8178014/webrev.00/

These are docs-only issues.

Thanks,

Brad