Integrated: 8308370: Fix build failures related to the java.awt.Robot documentation

[Alexander Zvegintsev]

Fix a typo

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Commit messages:
 - initial

Changes: https://git.openjdk.org/jdk/pull/14050/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14050&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8308370
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14050.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14050/head:pull/14050

PR: https://git.openjdk.org/jdk/pull/14050