Add Qualcomm QNN docs cover image

[glenn-jocher]

Adds docs/qnn_cover.avif (1280×804, 46 KB) used as the hero image on the new Qualcomm QNN export integration page in ultralytics/ultralytics#24591.

🛠️ PR Summary

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🌟 Summary

This PR appears to update repository assets, with the only noted change being a regenerated documentation image file used for QNN-related docs 🖼️

📊 Key Changes

• Updated docs/qnn_cover.avif, an auto-generated or lock-style asset file.
• No source code, configuration, or documentation text changes were included in the provided diff details.
• The change looks limited to a visual/documentation asset refresh rather than a functional update.

🎯 Purpose & Impact

• Likely refreshes or improves a docs cover image for QNN content, helping keep project visuals current ✨
• Should have no impact on runtime behavior, APIs, or model performance since no code changes were shown.
• Main benefit is improved presentation or consistency in documentation assets for users viewing the repository or related docs 📘

📋 Skipped 1 file (lock files, generated, images, etc.)

• docs/qnn_cover.avif

[UltralyticsAssistant]

👋 Hello @glenn-jocher, thank you for submitting a ultralytics/assets 🚀 PR! This is an automated message to help streamline review, and an engineer will assist you soon. Please review the checklist below to support a smooth integration of your changes 😊

• ✅ Define a Purpose: Clearly explain the purpose of your fix or feature in your PR description, and link to any relevant issues. Ensure your commit messages are clear, concise, and adhere to the project's conventions.
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• ✅ Update Documentation: Update the relevant documentation for any new or modified features.
• ✅ Add Tests: If applicable, include or update tests to cover your changes, and confirm that all tests are passing.
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• ✅ Minimize Changes: Limit your changes to the minimum necessary for your bug fix or feature addition. "It is not daily increase but daily decrease, hack away the unessential. The closer to the source, the less wastage there is." — Bruce Lee

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[UltralyticsAssistant]

🔍 PR Review

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All 1 changed files are generated/vendored (skipped review)

📋 Skipped 1 file (lock files, generated, images, etc.)

• docs/qnn_cover.avif

[UltralyticsAssistant]

Merged! 🎉 Thanks, @glenn-jocher, for keeping the docs polished and up to date with this QNN cover asset refresh.

“Details make perfection, and perfection is not a detail.” — Leonardo da Vinci

This update is a great reminder that even small visual improvements strengthen the overall documentation experience and help keep Ultralytics resources clear, consistent, and professional. Much appreciated.