chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-02-26 17:47:00,667 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-automl/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-26 17:47:02,421 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/eef3447a-1b9c-4c11-ba74-c2c3ab7ce72c/targets

• To automatically regenerate this PR, check this box.

[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #480 (0f25da6) into master (b8ebfd9) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #480   +/-   ##
=========================================
  Coverage     80.38%   80.38%           
  Complexity      465      465           
=========================================
  Files            24       24           
  Lines          3548     3548           
  Branches         37       37           
=========================================
  Hits           2852     2852           
  Misses          627      627           
  Partials         69       69           

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