chore: fix typing in code

[rubiesonthesky]

PR Checklist

• Addresses an existing open issue: fixes #000
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

There's no issue about this since it's just quick type fix.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 74.80%. Comparing base (4eb4679) to head (1f3eac2).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/initialization/sources/index.ts	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2054   +/-   ##
=======================================
  Coverage   74.80%   74.80%           
=======================================
  Files         177      177           
  Lines        7590     7590           
  Branches     1063     1063           
=======================================
  Hits         5678     5678           
  Misses       1907     1907           
  Partials        5        5           

Flag	Coverage Δ
mutation	64.57% <0.00%> (ø)
unit	17.07% <0.00%> (ø)

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[JoshuaKGoldberg]

Nice, thanks 😄

[github-actions]

🎉 This is included in version v0.8.5 🎉

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀