chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-04-27 18:28:52,778 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-os-config/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-04-27 18:28:54,028 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

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[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #266 (150ebaf) into master (d8e2d3e) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #266   +/-   ##
=========================================
  Coverage     78.42%   78.42%           
  Complexity       90       90           
=========================================
  Files             6        6           
  Lines           672      672           
  Branches         11       11           
=========================================
  Hits            527      527           
  Misses          134      134           
  Partials         11       11           

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