Update README.md

README.md

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-A systematic and standardized benchmark for the multi-dialect Arabic zero-shot TTS task,   
-from the paper "Habibi: Laying the Open-Source Foundation of Unified-Dialectal Arabic Speech Synthesis".
+# A systematic and standardized benchmark for the multi-dialect Arabic zero-shot TTS task
 
-Usage guidance:    
-Github: https://github.com/SWivid/Habibi-TTS
+Paper: "Habibi: Laying the Open-Source Foundation of Unified-Dialectal Arabic Speech Synthesis"   
+Github: https://github.com/SWivid/Habibi-TTS
+
+
+> [!NOTE]  
+> Most subsets are licensed under Apache 2.0, except for SAU sourced from the CC-BY-NC-SA-4.0 [SADA](https://www.kaggle.com/datasets/sdaiancai/sada2022).