RFR: 8276573: Use blessed modifier order in jdk.javadoc

[Pavel Rappo]

This PR is to jdk.javadoc as JDK-8276348 (#6213) to java.base. This change was produced by running the below command:

    $ sh ./bin/blessed-modifier-order.sh src/jdk.javadoc

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Commit messages:
 - Initial commit

Changes: https://git.openjdk.java.net/jdk/pull/6239/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6239&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276573
  Stats: 7 lines in 5 files changed: 0 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6239.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6239/head:pull/6239

PR: https://git.openjdk.java.net/jdk/pull/6239