Revise introduction for clarity and conciseness

Author: anxiangsir

README.md

@@ -84,7 +84,7 @@
 
 
 ## Introduction
-**LLaVA-OneVision-1.5** introduces a novel family of **fully open-source** Large Multimodal Models (LMMs) that achieves **state-of-the-art performance**  with substantially **lower cost** through training on **native resolution** images.
+**LLaVA-OneVision-1.5** introduces a family of fully open-source large multimodal models (LMMs) that operate on **native-resolution images**, achieve **state-of-the-art** performance, and require comparatively **lower training costs**.
 
 #### **Superior Performance**
   - The model leads on multiple multimodal benchmarks and generally surpasses Qwen2.5-VL.