changed prsint output format flag

[larsbuntemeyer]

closes #60

[codecov-commenter]

Codecov Report

Merging #68 (3640452) into master (a4d41cf) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #68      +/-   ##
==========================================
- Coverage   58.60%   58.58%   -0.02%     
==========================================
  Files          33       33              
  Lines        2179     2178       -1     
==========================================
- Hits         1277     1276       -1     
  Misses        902      902              

Flag	Coverage Δ
unittests	58.58% <100.00%> (-0.02%)	⬇️

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Impacted Files	Coverage Δ
pyremo/prsint/cli.py	96.29% <100.00%> (-0.07%)	⬇️

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