chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-02-24 19:38:24,467 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-dataproc/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-24 19:38:26,060 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/78a45b23-e294-4a00-b02b-7a2ad67d5222/targets

• To automatically regenerate this PR, check this box.

[codecov]

Codecov Report

Merging #453 (cd2f90e) into master (f49ec39) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #453   +/-   ##
=========================================
  Coverage     78.19%   78.19%           
  Complexity      606      606           
=========================================
  Files            48       48           
  Lines          4402     4402           
  Branches         48       48           
=========================================
  Hits           3442     3442           
  Misses          912      912           
  Partials         48       48           

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[yoshi-approver]

Rubber stamped PR!