Fix "Prefer format() over string interpolation operator" issue

[pbrod]

This pull request automatically fixes all occurrences of the following issue:

Issue type: Prefer format() over string interpolation operator
Issue details: https://www.quantifiedcode.com/app/project/gh:pbrod:Nvector?groups=code_patterns/%3A4ACGxFj1

To adjust the commit message or the actual code changes, just rebase or cherry-pick the commits.
For questions or feedback reach out to cody@quantifiedcode.com.

Legal note: We won't claim any copyrights on the code changes.

Cheers,
Cody - Your code quality bot

[codecov-io]

Current coverage is 88.62%

Merging #2 into master will not affect coverage as of e38ff8c

@@            master      #2   diff @@
======================================
  Files            6       6       
  Stmts          589     589       
  Branches        35      35       
  Methods          0       0       
======================================
  Hit            522     522       
  Partial         13      13       
  Missed          54      54       

Review entire Coverage Diff as of e38ff8c

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