Update README.md

README.md

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 # 📘 BookMIA Datasets
 
 The **BookMIA datasets** serve as a benchmark designed to evaluate membership inference attack (MIA) methods, specifically in detecting pretraining data from OpenAI models that are released before 2023 (such as text-davinci-003). 
-The dataset contains non-member and member data: non-member data consists of text excerpts from books first published in 2023, while member data includes text excerpts from older books, as categorized by Chang et al. in 2023.
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+The dataset contains non-member and member data: 
+- non-member data consists of text excerpts from books first published in 2023
+- member data includes text excerpts from older books, as categorized by Chang et al. in 2023.
 
 ### 📌 Applicability