Add CLA note to CONTRIBUTING.md

[joshlk]

Fixes #8006

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/8014

• 📄 Preview Python docs built from this PR

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❌ 3 New Failures, 17 Unrelated Failures

As of commit b28b665 with merge base ddfee23 ():

NEW FAILURES - The following jobs have failed:

• Build M1 Wheels / pytorch/vision / wheel-py3_8-cpu (gh)
• CMake / linux (linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job (gh)
• Tests / unittests-windows (3.8, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job (gh)

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• CMake / macos (macos-12) / macos-job (gh)
• CMake / macos (macos-m1-12) / macos-job (gh)
• CMake / windows (windows.4xlarge, cpu) / windows-job (gh)
• CMake / windows (windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job (gh)
• Prototype tests on Linux / unittests-prototype (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job (gh)
• Tests / unittests-linux (3.8, linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job (gh)
• Tests / unittests-macos (3.10, macos-12) / macos-job (gh)
• Tests / unittests-macos (3.11, macos-12) / macos-job (gh)
• Tests / unittests-macos (3.8, macos-12) / macos-job (gh)
• Tests / unittests-macos (3.8, macos-m1-12) / macos-job (gh)
• Tests / unittests-macos (3.9, macos-12) / macos-job (gh)
• Tests / unittests-windows (3.10, windows.4xlarge, cpu) / windows-job (gh)
• Tests / unittests-windows (3.11, windows.4xlarge, cpu) / windows-job (gh)
• Tests / unittests-windows (3.8, windows.4xlarge, cpu) / windows-job (gh)
• Tests / unittests-windows (3.9, windows.4xlarge, cpu) / windows-job (gh)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Build M1 Conda / pytorch/vision / conda-py3_8-cpu (gh)
• Build Macos Conda / pytorch/vision / conda-py3_8-cpu (gh)

This comment was automatically generated by Dr. CI and updates every 15 minutes.

[NicolasHug]

Thanks @joshlk , I made a suggestion below, LMK what you think

[joshlk]

Sounds good. Ive made the change

[NicolasHug]

Thanks @joshlk