Add new SageMaker examples: DeepSeek OCR, TRL CLI fine-tuning, Neuron… (#2188)
* Add new SageMaker examples: DeepSeek OCR, TRL CLI fine-tuning, Neuron Agent
- DeepSeek OCR Pipeline on SageMaker Training Jobs (3-stage VLM OCR)
- Fine-Tuning LLMs with TRL CLI on SageMaker (zero-code fine-tuning)
- Deploy an AI Agent on AWS Inferentia2 with SageMaker (Strands + MCP)
Includes assets for OCR pipeline diagrams and MCP settings screenshot.
* Fix image paths in DeepSeek OCR notebook (../assets -> ./assets)
* Remove anchor tags from DeepSeek OCR notebook to fix heading rendering
* Fix notebook issues: container images, trackio docs, use documentation-images
* Update container reference to HF vLLM Inference Neuronx DLC