Flake8: remove E127

[elacuesta]

Continuation line over-indented for visual indent

[codecov]

Codecov Report

Merging #4538 into master will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4538      +/-   ##
==========================================
- Coverage   84.55%   84.46%   -0.10%     
==========================================
  Files         164      164              
  Lines        9898     9898              
  Branches     1480     1480              
==========================================
- Hits         8369     8360       -9     
- Misses       1261     1268       +7     
- Partials      268      270       +2     

Impacted Files	Coverage Δ
scrapy/core/downloader/handlers/ftp.py	98.36% <100.00%> (ø)
scrapy/core/engine.py	87.87% <100.00%> (ø)
scrapy/utils/deprecate.py	95.38% <100.00%> (ø)
scrapy/utils/request.py	100.00% <100.00%> (ø)
scrapy/utils/py36.py	20.00% <0.00%> (-80.00%)	⬇️
scrapy/utils/spider.py	62.50% <0.00%> (-12.50%)	⬇️
scrapy/utils/trackref.py	82.85% <0.00%> (-2.86%)	⬇️