chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2020-11-04 00:36:10,480 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-redis/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-11-04 00:36:11,367 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/0db01d83-a56a-4060-a486-7ba66b9887fc/targets

• To automatically regenerate this PR, check this box.

[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #256 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #256   +/-   ##
=========================================
  Coverage     77.28%   77.28%           
  Complexity      178      178           
=========================================
  Files            12       12           
  Lines          1611     1611           
  Branches         12       12           
=========================================
  Hits           1245     1245           
  Misses          346      346           
  Partials         20       20           

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