Update README.md

README.md

@@ -18,7 +18,7 @@ This requires the model to reason through multiple tool invocations (e.g., weath
 
 Our training pipeline leverages:
 
-- (**Dr. GRPO**)[https://arxiv.org/abs/2503.20783] for stable and sample-efficient reinforcement learning.
+- [**Dr. GRPO**](https://arxiv.org/abs/2503.20783) for stable and sample-efficient reinforcement learning.
 - **Synthetic multi-step MCP interactions** with strong tool chaining behavior, generated using our internal data engine.
 - **SGLang + VeRL** for efficient multi-turn rollout environments, built on top of Qwen3-4B for its function-calling capabilities.