RFR: 8336091: Fix HTML warnings in the generated HTML files

Tue Jul 16 14:34:02 UTC 2024

Can I please have a review for this bug fix? This regex to avoid duplicate "style" tags in our generated HTML, It can now match it even if the text contains a newline character. 

Thanks in advance!

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Commit messages:
 - (C)
 - Improve style attribute regex

Changes: https://git.openjdk.org/jdk/pull/20196/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20196&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8336091
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/20196.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20196/head:pull/20196

PR: https://git.openjdk.org/jdk/pull/20196