docs: fix incorrect app identifier in CONTRIBUTING.md

[jitendra205saini]

The CUDA backend path used com.voicebox.app, but the actual Tauri identifier is sh.voicebox.app (as in tauri.conf.json and all other docs).

Summary by CodeRabbit

• Documentation
  • Updated the build instructions for Windows/local GPU switching to reflect the correct CUDA binary path.
  • Clarified the location used during setup while keeping the rest of the guidance unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 459f5a9a-2cc4-462a-854d-f41a1f93da1c

📥 Commits

Reviewing files that changed from the base of the PR and between f2cf2a7 and 617ca7e.

📒 Files selected for processing (1)

• CONTRIBUTING.md

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📝 Walkthrough

Walkthrough

Updated a single line in CONTRIBUTING.md, correcting the Windows %APPDATA% path referenced for the CUDA server binary during local GPU switching builds, from com.voicebox.app/backends/ to sh.voicebox.app/backends/.

Changes

Documentation path fix

Layer / File(s)	Summary
Update CUDA binary path in build docs CONTRIBUTING.md	Corrected the %APPDATA% directory reference for the CUDA server binary from com.voicebox.app/backends/ to sh.voicebox.app/backends/.

Estimated code review effort: 1 (Trivial) | ~2 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the documentation fix and the corrected app identifier in CONTRIBUTING.md.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Create PR with unit tests

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