Clarifying the Stream::reduce Javadoc
--------- - [X] I confirm that I make this contribution in accordance with the [OpenJDK Interim AI Policy](https://openjdk.org/legal/ai). ------------- Commit messages: - Making the Javadoc of Stream::reduce(T, Function, Function) less ambiguous Changes: https://git.openjdk.org/jdk/pull/30700/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=30700&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8381418 Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod Patch: https://git.openjdk.org/jdk/pull/30700.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/30700/head:pull/30700 PR: https://git.openjdk.org/jdk/pull/30700
