Fix model in embeddings demo

[michalkulakowski]

🛠 Summary

JIRA/Issue if applicable.
Describe the changes.

🧪 Checklist

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

Pull request overview

Updates the embeddings demo documentation to use the correct Qwen3 embeddings model variant for NPU usage.

Changes:

• Switches the Qwen3 NPU tab sync/model reference from fp16 to int8.
• Adds a docker run example for serving the Qwen3 int8 OpenVINO model via OpenVINO Model Server.

[Copilot]

docker run --pull requires an explicit value (e.g., --pull=always|missing|never) in supported Docker versions; using --pull without a value will fail. Update the command to provide a value (or remove the flag if not needed).

Suggested change

	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest --pull --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings
	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest --pull=always --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings

[Copilot]

Using the :latest tag makes the documentation non-reproducible (behavior can change over time). Prefer pinning to a specific, known-good image version/tag to keep the demo stable.

Suggested change

	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest --pull --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings
	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:2024.0 --pull --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings

[Copilot]

The bind mount uses -v $(pwd)/models:... without quoting; if the working directory path contains spaces, the command will break. Quote the host path (or use an absolute path variable) to make the example more robust.

Suggested change

	docker run --user $(id -u):$(id -g) --rm -v $(pwd)/models:/models:rw openvino/model_server:latest --pull --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings
	docker run --user $(id -u):$(id -g) --rm -v "$(pwd)/models":/models:rw openvino/model_server:latest --pull --model_repository_path /models --source_model OpenVINO/Qwen3-Embedding-0.6B-int8-ov --pooling LAST --task embeddings