chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2020-11-03 09:12:53,389 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-securitycenter/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-11-03 09:12:54,260 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/05deb94e-d1e9-4caf-944e-405fa5835eb2/targets

• To automatically regenerate this PR, check this box.

[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #294 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #294   +/-   ##
=========================================
  Coverage     78.42%   78.42%           
  Complexity      455      455           
=========================================
  Files            18       18           
  Lines          4070     4070           
  Branches         61       61           
=========================================
  Hits           3192     3192           
  Misses          809      809           
  Partials         69       69           

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