RFR: 8311290: Improve java.lang.ref.Cleaner rendered documentation

Wed Jul 5 14:08:55 UTC 2023

On Tue, 4 Jul 2023 12:40:26 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

> 1. Missing leading asterisk interferes with example indentation; nothing in https://bugs.openjdk.org/browse/JDK-8276700 (or review thereof), which introduced that line, suggests that the asterisk was omitted on purpose. 
> 2. link and linkplain tags are used suboptimally.

LGTM

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Marked as reviewed by rriggs (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14768#pullrequestreview-1514614451