RFR: JDK-8259806: Clean up terminology on the "All Classes" page

[Jonathan Gibbons]

On Mon, 31 May 2021 10:06:14 GMT, Hannes Wallnöfer <hannesw at openjdk.org> wrote:

> This is a simple change to replace the "All Classes" with "All Classes and Interfaces" in the heading of and references to the page of the same name.

Maybe I'm fighting a losing battle on this one, but the current policy is to generate the correct new terminology for recent releases and the older terminology for older releases, to try and stay consist within the release.

The mapping is handled semi-automatically in `HtmlDoclet.getResourceKeyMapper`, line 130.  As a general rule, if you're changing terminology, you should at least be updating the mapping as well.

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Changes requested by jjg (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4270