chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-03-15 14:33:57,225 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-iot/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-03-15 14:33:58,090 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/7a59e385-1037-484f-a07f-9bf1a46c12b0/targets

• To automatically regenerate this PR, check this box.

[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #405 (585eba5) into master (c7e5386) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #405   +/-   ##
=========================================
  Coverage     83.74%   83.74%           
  Complexity      172      172           
=========================================
  Files             6        6           
  Lines          1101     1101           
  Branches         18       18           
=========================================
  Hits            922      922           
  Misses          155      155           
  Partials         24       24           

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