[jdk18u] RFR: 8284992: Fix misleading Vector API doc for LSHR operator

[Jie Fu]

8284992: Fix misleading Vector API doc for LSHR operator

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Commit messages:
 - Backport e54f26aa3d5d44264e052bc51d3d819a8da5d1e7

Changes: https://git.openjdk.java.net/jdk18u/pull/129/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk18u&pr=129&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284992
  Stats: 4 lines in 1 file changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk18u/pull/129.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk18u pull/129/head:pull/129

PR: https://git.openjdk.java.net/jdk18u/pull/129