RFR: 7060: [WLS] Rule result formatting update w.r.t Rule 2.0

[Suchita Chaturvedi]

This PR addresses the replacement of HTML tags which are not supported after Rules 2.0.

This change is mainly addressing the regression caused due to Rules 2.0 in WLS plugin rule Long Lasting Servlet Rule Request. After Rules 2.0 the report on automated analysis screen became unreadable as HTML tags like ``<ul> <li>`` were directly shown on UI. As part of this change I have replaced these tags with some appropriate characters to make the report readable.

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Commit messages:
 - 7060: [WLS] Rule result formatting update w.r.t Rule 2.0

Changes: https://git.openjdk.java.net/jmc/pull/258/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=258&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7060
  Stats: 13 lines in 2 files changed: 3 ins; 1 del; 9 mod
  Patch: https://git.openjdk.java.net/jmc/pull/258.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/258/head:pull/258

PR: https://git.openjdk.java.net/jmc/pull/258