Fix the url of gRPC timeouts on README.md

[royeo]

The link http://www.grpc.io/docs/guides/wire.html is no longer valid, it should be https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md .

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[codecov-io]

Codecov Report

Merging #836 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #836   +/-   ##
=======================================
  Coverage   50.22%   50.22%           
=======================================
  Files          39       39           
  Lines        3755     3755           
=======================================
  Hits         1886     1886           
  Misses       1687     1687           
  Partials      182      182

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[royeo]

I signed it!

[googlebot]

CLAs look good, thanks!

[johanbrandhorst]

Hi @royeo, thanks for spotting this! Could you perhaps even point it at https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests to make it even more specific? Thanks!

[royeo]

Hi @royeo, thanks for spotting this! Could you perhaps even point it at https://github.com/grpc/grpc/blob/master/doc/PROTOCOL-HTTP2.md#requests to make it even more specific? Thanks!

Hi @johanbrandhorst , that's really better, I have modified it.

[johanbrandhorst]

Thanks for your contribution!