Minor improvement to dataset card description

This PR slightly improves the dataset card description to better reflect the dataset's focus on clinical trial outcome prediction.

README.md

@@ -1,11 +1,11 @@
 ---
-license: mit
 annotations_creators:
 - other
 language_creators:
 - other
 language:
 - en
+license: mit
 multilinguality:
 - monolingual
 size_categories:
@@ -61,7 +61,7 @@ tags:
 - healthcare
 ---
 
-Dataset for "Automatically Labeling Clinical Trial Outcomes: A Large-Scale Benchmark for Drug Development"
+Dataset for **predicting** clinical trial outcomes in drug development.  This dataset is part of the work presented in "Automatically Labeling Clinical Trial Outcomes: A Large-Scale Benchmark for Drug Development".
 
 Website: https://chufangao.github.io/CTOD/