RFR: 8316207: Fix typos in java.io.StreamTokenizer

Wed Sep 13 15:52:07 UTC 2023

This is a simple PR to fix a few typos in the doc comments of java.io.StreamTokenizer. When reviewing it, please double-check my proposal for L481. For this, you should ideally read the complete comment to the `lowerCaseMode` method. Thanks!

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Commit messages:
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/15723/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15723&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316207
  Stats: 4 lines in 1 file changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/15723.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15723/head:pull/15723

PR: https://git.openjdk.org/jdk/pull/15723