chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-02-25 18:38:24,807 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-dns/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-25 18:38:26,286 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/2ca23bb0-13b0-4920-ab66-298b9c120b23/targets

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[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #334 (1be82ab) into master (4f098f4) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #334   +/-   ##
=========================================
  Coverage     77.26%   77.26%           
  Complexity      178      178           
=========================================
  Files            15       15           
  Lines          1192     1192           
  Branches        105      105           
=========================================
  Hits            921      921           
  Misses          218      218           
  Partials         53       53           

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