add markdown to html parser for pull request description

[simonsymhoven]

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your master branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[codecov]

Codecov Report

Merging #84 (205e387) into master (05d945c) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 205e387 differs from pull request most recent head e057afd. Consider uploading reports for the commit e057afd to get more accurate results

@@            Coverage Diff            @@
##             master      #84   +/-   ##
=========================================
  Coverage     79.26%   79.26%           
  Complexity        8        8           
=========================================
  Files             1        1           
  Lines            82       82           
  Branches          7        7           
=========================================
  Hits             65       65           
  Misses           14       14           
  Partials          3        3           

Impacted Files	Coverage Δ
...in/java/io/jenkins/plugins/monitoring/Monitor.java	79.26% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 05d945c...e057afd. Read the comment docs.