Fix staticcheck linter issues

[jjngx]

Proposed changes

Fix linting issues reported by staticcheck in the configs package

$ staticcheck internal/configs/*.go

internal/configs/configurator.go:258:20: error strings should not be capitalized (ST1005)
...
internal/configs/parsing_helpers.go:108:13: error strings should not be capitalized (ST1005)
...

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[codecov-commenter]

Codecov Report

Merging #3097 (1efcd4f) into main (b574d09) will increase coverage by 0.01%.
The diff coverage is 23.40%.

@@            Coverage Diff             @@
##             main    #3097      +/-   ##
==========================================
+ Coverage   52.23%   52.24%   +0.01%     
==========================================
  Files          58       58              
  Lines       16045    16045              
==========================================
+ Hits         8381     8383       +2     
+ Misses       7386     7384       -2     
  Partials      278      278              

Impacted Files	Coverage Δ
internal/configs/configurator.go	37.06% <15.00%> (ø)
internal/configs/parsing_helpers.go	67.64% <71.42%> (ø)
...ternal/k8s/appprotect/app_protect_configuration.go	86.74% <0.00%> (+0.57%)	⬆️

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