Clean up the output of the orb list command.

[marcomorain]

marc@blaster ~/dev/go/src/github.com/CircleCI-Public/circleci-cli $ go run main.go orb list
Orb: circleci/codecov-clojure

[codecov-io]

Codecov Report

Merging #7 into master will increase coverage by 0.3%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master       #7     +/-   ##
=========================================
+ Coverage   34.79%   35.09%   +0.3%     
=========================================
  Files           9        9             
  Lines         457      453      -4     
=========================================
  Hits          159      159             
+ Misses        282      278      -4     
  Partials       16       16

Impacted Files	Coverage Δ
cmd/orb.go	21.33% <ø> (+1.08%)	⬆️

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