RFR: 8326158: Javadoc for java.time.DayOfWeek#minus(long)

[Naoto Sato]

Fixing a typo in the said method.

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Commit messages:
 - initial commit

Changes: https://git.openjdk.org/jdk/pull/17933/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17933&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8326158
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17933.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17933/head:pull/17933

PR: https://git.openjdk.org/jdk/pull/17933