Feat/interface name lower

[hohmannr]

Description

• Commit 1: Updates and adds InterfaceNameLower to templating variables

• Commit 2: Updates the docs accordingly

• Commit 3: Fixes spelling errors (sorry my OCD kicked in, you can cherry-pick the commits if you do not want this)

• Related Feature Request: InterfaceNameLower as a template variable parameter. #670

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Version of Golang used when building/testing:

• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20

How Has This Been Tested?

Added an minimal invasive test for the templating variables in outputter_test.go to the existing test case.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[LandonTClipp]

I'm honestly shocked you didn't find more spelling errors! This looks good, thanks for the PR.

[codecov]

Codecov Report

Patch coverage: 75.00000% and project coverage change: +0.02222 🎉

Comparison is base (b5592d6) 75.26978% compared to head (6e6efc2) 75.29200%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##              master        #672         +/-   ##
===================================================
+ Coverage   75.26978%   75.29200%   +0.02222%     
===================================================
  Files              9           9                 
  Lines           2224        2226          +2     
===================================================
+ Hits            1674        1676          +2     
  Misses           412         412                 
  Partials         138         138                 

Impacted Files	Coverage Δ
pkg/config/config.go	70.56452% <0.00000%> (ø)
pkg/outputter.go	62.99559% <100.00000%> (+0.32891%)	⬆️

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