RFR: JDK-8280492: Address remaining doclint issues in JDK build

[Joe Darcy]

Use presumed syntax that will be introduced by JDK-8280488.

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Commit messages:
 - JDK-8280492: Address remaining doclint issues in JDK build

Changes: https://git.openjdk.java.net/jdk/pull/7189/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7189&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280492
  Stats: 57 lines in 17 files changed: 0 ins; 0 del; 57 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7189.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7189/head:pull/7189

PR: https://git.openjdk.java.net/jdk/pull/7189