Improve Gunicorn logging documentation

[crisidev]

What do these changes do?

Improve Gunicorn logging documentation.

Are there changes in behavior for the user?

No.

Related issue number

#2916

[crisidev]

Travis is failing because I made an error in the docs. Working on a fix.

[asvetlov]

Still fails :(

[crisidev]

Interesting.. On my laptop it builds fine.. I will address this as soon as I have some time. Sorry about that :D

[asvetlov]

Warning, treated as error:
/home/travis/build/aio-libs/aiohttp/docs/deployment.rst:283:undefined label: gunicorn-access-logs (if the link has no caption the label must precede a section header)

[crisidev]

I should have fixed the issue :) I am quite new to RST with anchors. You may want to squash the commits into one.

[codecov-io]

Codecov Report

Merging #2921 into master will increase coverage by <.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2921      +/-   ##
==========================================
+ Coverage   97.98%   97.99%   +<.01%     
==========================================
  Files          40       40              
  Lines        7511     7513       +2     
  Branches     1318     1318              
==========================================
+ Hits         7360     7362       +2     
  Misses         48       48              
  Partials      103      103

Impacted Files	Coverage Δ
aiohttp/connector.py	96.82% <0%> (ø)	⬆️
aiohttp/web_protocol.py	91.86% <0%> (+0.05%)	⬆️

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[asvetlov]

Thanks

[crisidev]

Sweet!

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a [new issue] for related bugs.
If you feel like there's important points made in this discussion, please include those exceprts into that [new issue].
[new issue]: https://github.com/aio-libs/aiohttp/issues/new