chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-04-20 16:03:05,438 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-gkehub/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-04-20 16:03:06,720 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/c0cc90cd-60df-421a-a134-669e0a0c0f79/targets

• To automatically regenerate this PR, check this box. (May take up to 24 hours.)

[codecov]

Codecov Report

Merging #30 (684e1da) into master (be96b8b) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #30   +/-   ##
=========================================
  Coverage     78.25%   78.25%           
  Complexity       70       70           
=========================================
  Files             6        6           
  Lines           607      607           
  Branches          2        2           
=========================================
  Hits            475      475           
  Misses          130      130           
  Partials          2        2           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update be96b8b...684e1da. Read the comment docs.