RFR: 8295155: Incorrect javadoc of java.base module

[Raffaello Giulietti]

Simple doc correction.

-------------

Commit messages:
 - 8295155: Incorrect javadoc of java.base module

Changes: https://git.openjdk.org/jdk/pull/10658/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10658&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8295155
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/10658.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10658/head:pull/10658

PR: https://git.openjdk.org/jdk/pull/10658