[code-reflection] Integrated: JavaDoc fix.

[Paul Sandoz]

Add missing `<ul>` tag

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Commit messages:
 - JavaDoc fix.

Changes: https://git.openjdk.org/babylon/pull/824/files
  Webrev: https://webrevs.openjdk.org/?repo=babylon&pr=824&range=00
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/babylon/pull/824.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/824/head:pull/824

PR: https://git.openjdk.org/babylon/pull/824