[jdk21u-dev] RFR: 8335775: Remove extraneous 's' in comment of rawmonitor.cpp test file

[Andrew John Hughes]

A trivial backport to fix a typo (an errant 's') in test/hotspot/jtreg/vmTestbase/nsk/jvmti/unit/functions/rawmonitor/rawmonitor.cpp introduced by [JDK-8299635](https://bugs.openjdk.org/browse/JDK-8299635). It doesn't apply cleanly as 21u doesn't have  [JDK-8324681](https://bugs.openjdk.org/browse/JDK-8324681) which bumped the copyright header to 2024 (which probably should have been bumped to 2023 in 8299635!)

This was spotted by George Adams (@gdams) when backporting 8299635 to 17u, where it is now needed to support builds on newer versions of Mac OS. It's a trivial fix it makes sense to clean up everywhere.

This pull request contains a backport of commit [ff49f677](https://github.com/openjdk/jdk/commit/ff49f677ee5017019c90823bc412ceb90068ffbd) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.

The commit being backported was authored by Severin Gehwolf on 5 Jul 2024 and was reviewed by George Adams and Thomas Stuefe. Backport to 23 is in progress (https://github.com/openjdk/jdk23u/pull/15)

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Commit messages:
 - Backport ff49f677ee5017019c90823bc412ceb90068ffbd

Changes: https://git.openjdk.org/jdk21u-dev/pull/826/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=826&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335775
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/826.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/826/head:pull/826

PR: https://git.openjdk.org/jdk21u-dev/pull/826