Integrated: 8338780: GenShen: Fix up some comments

[Y. Srinivas Ramakrishna]

On Thu, 22 Aug 2024 17:20:49 GMT, Y. Srinivas Ramakrishna <ysr at openjdk.org> wrote:

> In https://github.com/openjdk/jdk/pull/20395 Aleksey provided some suggestions for improving various comments. This ticket gathers together several of those changes. Additionally, there was a small simplification in the collection set construction for the global gc case as a result of the review & ensuing discussion.
> 
> **Testing:** 
> - [x] GHA
> - [x] SPECjbb w/GenShen
> - [x] jtreg:tier1
> - [x] jtreg:hotspot_gc (one test fails with OOM in master as well as current branch; will investigate that separately)
> - [x] Codepipeline testing

This pull request has now been integrated.

Changeset: 977200a0
Author:    Y. Srinivas Ramakrishna <ysr at openjdk.org>
URL:       https://git.openjdk.org/shenandoah/commit/977200a0c073e90754f56730477d0fa32fd7ec9a
Stats:     114 lines in 4 files changed: 34 ins; 72 del; 8 mod

8338780: GenShen: Fix up some comments

Reviewed-by: kdnilsen

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PR: https://git.openjdk.org/shenandoah/pull/484