RFR: 8337205: Typo in Stack vs Deque Method table in Deque specification

[Chen Liang]

On Fri, 26 Jul 2024 21:06:31 GMT, Turkhan <duke at openjdk.org> wrote:

> This PR fixes `java.util.Deque`'s specification to name `peekFirst()` as an equivalent to Stack's `peek()` method since both of them don't throw when a collection is empty. This is not the case with the current `getFirst()` method.
> 
> Please let me know if I have to fix something in the PR. Will appreciate your guidance since this is my first PR to JDK.

Marked as reviewed by liach (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20363#pullrequestreview-2226251803