Update README.md to have full links to images

[max-rocket-internet]

No description provided.

[codecov]

Codecov Report

Merging #1536 into master will decrease coverage by 0.07%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1536      +/-   ##
==========================================
- Coverage   82.27%   82.20%   -0.08%     
==========================================
  Files          28       28              
  Lines        2562     2562              
  Branches      389      389              
==========================================
- Hits         2108     2106       -2     
  Misses        357      357              
- Partials       97       99       +2     

Impacted Files	Coverage Δ
locust/clients.py	90.19% <0.00%> (-4.91%)	⬇️
locust/stats.py	89.06% <0.00%> (+0.60%)	⬆️

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[cyberw]

Thx!