chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2021-02-24 19:40:40,140 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-asset/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working tree clean
2021-02-24 19:40:41,690 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/9929e7a5-5fa1-40a6-ac58-d074eca0f5a6/targets

• To automatically regenerate this PR, check this box.

[codecov]

Codecov Report

Merging #566 (7218fe5) into master (425c5c3) will decrease coverage by 0.72%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #566      +/-   ##
============================================
- Coverage     73.97%   73.25%   -0.73%     
+ Complexity      280      264      -16     
============================================
  Files            36       36              
  Lines          2179     2105      -74     
  Branches         11       11              
============================================
- Hits           1612     1542      -70     
  Misses          548      548              
+ Partials         19       15       -4     

Impacted Files	Coverage Δ	Complexity Δ
...ogle/cloud/asset/v1p1beta1/AssetServiceClient.java	72.05% <0.00%> (-1.56%)	9.00% <0.00%> (-2.00%)
...ogle/cloud/asset/v1p5beta1/AssetServiceClient.java	58.53% <0.00%> (-0.99%)	5.00% <0.00%> (ø%)
...asset/v1p5beta1/stub/AssetServiceStubSettings.java	75.55% <0.00%> (-0.79%)	10.00% <0.00%> (-1.00%)
...cloud/asset/v1beta1/stub/GrpcAssetServiceStub.java	85.93% <0.00%> (-0.63%)	9.00% <0.00%> (-1.00%)
...oud/asset/v1p1beta1/stub/GrpcAssetServiceStub.java	84.50% <0.00%> (-0.63%)	8.00% <0.00%> (-1.00%)
...oud/asset/v1p2beta1/stub/GrpcAssetServiceStub.java	92.03% <0.00%> (-0.59%)	11.00% <0.00%> (-1.00%)
...asset/v1p1beta1/stub/AssetServiceStubSettings.java	76.92% <0.00%> (-0.58%)	11.00% <0.00%> (-1.00%)
...oud/asset/v1p4beta1/stub/GrpcAssetServiceStub.java	86.76% <0.00%> (-0.56%)	9.00% <0.00%> (-1.00%)
...oud/asset/v1p5beta1/stub/GrpcAssetServiceStub.java	77.77% <0.00%> (-0.49%)	7.00% <0.00%> (ø%)
...asset/v1p2beta1/stub/AssetServiceStubSettings.java	81.81% <0.00%> (-0.44%)	14.00% <0.00%> (ø%)
... and 6 more

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[yoshi-approver]

Rubber stamped PR!