fix: Adjust argument index for Fprintf in fmtpercentv linter check

[Not-Dhananjay-Mishra]

Fprintf has the following signature

func Fprintf(w io.Writer, format string, a ...any) (n int, err error)

Previously, the linter always assumed the format string was at expr.Args[0]

fmtStrBasicLit, ok := expr.Args[0].(*ast.BasicLit)

#4436 (comment)

[gmlewis]

Thank you, @Not-Dhananjay-Mishra!
LGTM.
Merging.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.55%. Comparing base (97ca12d) to head (cdb71e4).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4443   +/-   ##
=======================================
  Coverage   97.55%   97.55%           
=======================================
  Files         194      194           
  Lines       19892    19892           
=======================================
  Hits        19406    19406           
  Misses        268      268           
  Partials      218      218           

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[Not-Dhananjay-Mishra]

Thank you, @Not-Dhananjay-Mishra!
LGTM.
Merging.

Thanks @gmlewis Btw, I recently completed one year contributing here. I have learned a lot along the way. ❤️

[gmlewis]

Thank you, @Not-Dhananjay-Mishra!
LGTM.
Merging.

Thanks @gmlewis Btw, I recently completed one year contributing here. I have learned a lot along the way. ❤️

Awesome! Congratulations, @Not-Dhananjay-Mishra and thank you very much for your contributions!
Your help is greatly appreciated!
I especially appreciate how carefully you check the JSON schemas and guide other contributors how to appropriately handled the required/optional distinctions (when all too frequently I just gloss over them). So special thanks go to you specifically for this!!!