docs: Update README to include NVIDIA NeMo Framework link (#1392)

Signed-off-by: Wenwen Gao <[email protected]>

Author: snowmanwwg

README.md

@@ -28,7 +28,7 @@
 
 ## Overview
 
-**Nemo RL** is an open-source post-training library developed by NVIDIA, designed to streamline and scale reinforcement learning methods for multimodal models (LLMs, VLMs etc.). Designed for flexibility, reproducibility, and scale, NeMo RL enables both small-scale experiments and massive multi-GPU, multi-node deployments for fast experimentation in research and production environments.
+**Nemo RL** is an open-source post-training library under the [NVIDIA NeMo Framework](https://github.com/NVIDIA-NeMo), designed to streamline and scale reinforcement learning methods for multimodal models (LLMs, VLMs etc.). Designed for flexibility, reproducibility, and scale, NeMo RL enables both small-scale experiments and massive multi-GPU, multi-node deployments for fast experimentation in research and production environments.
 
 What you can expect:
 - **Flexibility** with a modular design that allows easy integration and customization.