fix: notebook state and object type in instructions

[furkan]

Description

I added an empty state to the notebook metadata after realizing GitHub was not displaying it properly: https://github.com/roboflow/notebooks/blob/c414fa8ae353ead3e289f81cb7a54fd4a18e5795/notebooks/how-to-segment-videos-with-segment-anything-3.ipynb

Google Colab notebook works properly without this update. I could run it until (excluding) propagate in video section with the free tier GPU. I realized the instructions say person where they should say jet. So I fixed that as well.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How has this change been tested, please provide a testcase or example of how you tested the change?

The updated notebook on my fork, which gets parsed properly by GitHub, can be seen at https://github.com/furkan/notebooks/blob/e02928e3790a748aff0d9377892a4c6a5cfea32a/notebooks/how-to-segment-videos-with-segment-anything-3.ipynb

Any specific deployment considerations

None

Docs

Docs were not updated

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Thank you for all the work that went into this repository.

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