RFR: 8362501: Update test/hotspot/jtreg/applications/jcstress/README [v4]

[SendaoYan]

> Hi all,
> 
> Currently, this is no documentation on how to run the application/jcstress tests. I think it will be useful to complement the document test/hotspot/jtreg/applications/jcstress/README on how to run the jcstress tests in jtreg.
> 
> No behaviour has been change, only update the ducumentation, no risk.

SendaoYan has updated the pull request incrementally with one additional commit since the last revision:

  The way to
  get the specified build you can reference the guide

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Changes:
  - all: https://git.openjdk.org/jdk/pull/26369/files
  - new: https://git.openjdk.org/jdk/pull/26369/files/716b97c4..3be2e7f7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=26369&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=26369&range=02-03

  Stats: 3 lines in 1 file changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/26369.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/26369/head:pull/26369

PR: https://git.openjdk.org/jdk/pull/26369