update hf pull doc

[dtrawins]

🛠 Summary

add missing --user parameter in docker command

🧪 Checklist

• Unit tests added.
• The documentation updated.
• Change follows security best practices.
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[Copilot]

Pull request overview

Updates OVMS pull-mode documentation for using optimum-cli (Hugging Face model pull + conversion/quantization) via Docker examples.

Changes:

• Fixes the Docker docker run invocation to correctly pass the user/group via -u.
• Updates the Docker example snippet to create a local models directory and mount it via $(pwd)/models.

[Copilot]

The Docker example under “Example for pulling Qwen/Qwen3-8B” pulls Qwen/Qwen3-4B and sets --model_name Qwen3-4B, which conflicts with the section title and the adjacent baremetal example that still uses Qwen/Qwen3-8B. Please make the example consistent (either update the example back to 8B or change the surrounding text and other commands to 4B).

Suggested change

	docker run -u $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest-py --pull --source_model "Qwen/Qwen3-4B" --model_repository_path /models --model_name Qwen3-4B --task text_generation --weight-format int8
	docker run -u $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest-py --pull --source_model "Qwen/Qwen3-8B" --model_repository_path /models --model_name Qwen3-8B --task text_generation --weight-format int8