RFR: 8251495: Clarify DOM documentation

[Joe Wang]

On Thu, 10 Sep 2020 05:45:59 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Revert changes made by JDK-8249643, removing the implNote.
>
> Marked as reviewed by alanb (Reviewer).

Remove the implNote from the package description added by JDK-8249643.
The implementation's deviation from the specification was actually wrong.
It incorrectly identified characters from #x10000 to #x10FFFF as in the
surrogate blocks.

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PR: https://git.openjdk.java.net/jdk/pull/100