chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-02-24 19:43:14,191 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-logging/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-24 19:43:15,695 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/e3e58417-ca68-49e1-8f3d-02a7c862571a/targets

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[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #444 (950d4cb) into master (8017ec7) will decrease coverage by 4.50%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #444      +/-   ##
============================================
- Coverage     79.55%   75.04%   -4.51%     
  Complexity      656      656              
============================================
  Files            44       44              
  Lines          4098     3045    -1053     
  Branches        276      196      -80     
============================================
- Hits           3260     2285     -975     
+ Misses          688      626      -62     
+ Partials        150      134      -16     

Impacted Files	Coverage Δ	Complexity Δ
...java/com/google/cloud/logging/v2/ConfigClient.java	77.37% <0.00%> (-12.56%)	89.00% <0.00%> (ø%)
...ava/com/google/cloud/logging/v2/MetricsClient.java	69.01% <0.00%> (-10.75%)	23.00% <0.00%> (ø%)
...om/google/cloud/logging/spi/v2/GrpcLoggingRpc.java	30.26% <0.00%> (-10.08%)	1.00% <0.00%> (ø%)
...loud/logging/v2/stub/GrpcLoggingServiceV2Stub.java	81.03% <0.00%> (-9.27%)	12.00% <0.00%> (ø%)
.../logging/v2/stub/LoggingServiceV2StubSettings.java	65.71% <0.00%> (-8.96%)	16.00% <0.00%> (ø%)
.../logging/v2/stub/MetricsServiceV2StubSettings.java	76.66% <0.00%> (-6.32%)	15.00% <0.00%> (ø%)
...d/logging/v2/stub/ConfigServiceV2StubSettings.java	78.48% <0.00%> (-6.10%)	33.00% <0.00%> (ø%)
...ava/com/google/cloud/logging/v2/LoggingClient.java	74.03% <0.00%> (-5.81%)	24.00% <0.00%> (ø%)
...loud/logging/v2/stub/GrpcMetricsServiceV2Stub.java	85.48% <0.00%> (-5.58%)	11.00% <0.00%> (ø%)
...src/main/java/com/google/cloud/logging/Option.java	75.00% <0.00%> (-5.00%)	7.00% <0.00%> (ø%)
... and 17 more

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