[11u] RFR: 8228479: Correct the format of ColorChooserDemoTest

[Lindenmaier, Goetz]

Hi

I would like to downport this for parity with 11.0.7-oracle.
It only corrects indentation.
It did not apply because 11 has a newline at the end of the file
14 did not have. Trivial.

http://cr.openjdk.java.net/~goetz/wr19/8228479-ColorChooserDemo_format-jdk11/01/
https://bugs.openjdk.java.net/browse/JDK-8228479
https://hg.openjdk.java.net/jdk/jdk/rev/8538b1f28a71

Best regards,
  Goetz.