[jdk11u-dev] RFR: 8290207: Missing notice in dom.md

[Goetz Lindenmaier]

I backport this for parity with 11.0.17-oracle.

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Commit messages:
 - Backport 73b83e018838d3870733970b2bb22a8394b53330

Changes: https://git.openjdk.org/jdk11u-dev/pull/1358/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1358&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290207
  Stats: 15 lines in 1 file changed: 15 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1358.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1358/head:pull/1358

PR: https://git.openjdk.org/jdk11u-dev/pull/1358