Fixed go example in readme file

[michelvocks]

Fixes #87

[codecov-io]

Codecov Report

Merging #88 into master will decrease coverage by 0.1%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #88      +/-   ##
==========================================
- Coverage   64.59%   64.48%   -0.11%     
==========================================
  Files          22       22              
  Lines        1881     1881              
==========================================
- Hits         1215     1213       -2     
- Misses        535      537       +2     
  Partials      131      131

Impacted Files	Coverage Δ
scheduler/scheduler.go	74.08% <0%> (-0.73%)	⬇️

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