Improving Docs for NVIDIA TensorRT and Triton integrations (#13060)

docs/docs/examples/llm/nvidia_tensorrt.ipynb

docs/docs/examples/llm/nvidia_triton.ipynb

...dia-tensorrt/llama_index/llms/nvidia_tensorrt/__init__.py

...-nvidia-tensorrt/llama_index/llms/nvidia_tensorrt/base.py

...nvidia-tensorrt/llama_index/llms/nvidia_tensorrt/utils.py

...ions/llms/llama-index-llms-nvidia-tensorrt/pyproject.toml

...-nvidia-triton/llama_index/llms/nvidia_triton/__init__.py

...llms-nvidia-triton/llama_index/llms/nvidia_triton/base.py

...lms-nvidia-triton/llama_index/llms/nvidia_triton/utils.py

...ations/llms/llama-index-llms-nvidia-triton/pyproject.toml