RFR: 8339731: java.desktop/share/classes/javax/swing/text/html/default.css typo in margin settings

[Matthias Baesken]

java.desktop/share/classes/javax/swing/text/html/default.css:105: margin-rigth: 0;

seems to be a typo (must be right).

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Commit messages:
 - JDK-8339731

Changes: https://git.openjdk.org/jdk/pull/20915/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20915&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339731
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/20915.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20915/head:pull/20915

PR: https://git.openjdk.org/jdk/pull/20915