Update README.md

README.md

@@ -22,7 +22,7 @@ deterministic modifications — on half of the reference reasoning steps in the
 (deductive reasoning), ProofWriter (logical reasoning); three arithmetic reasoning datasets MATH, ASDIV and AQUA; EQASC 
 (explanations for commonsense question answering), and StrategyQA (question answering with implicit reasoning strategies).
 
-##References
+## References
 
 1. Tianyu Gao, Xingcheng Yao, and Danqi Chen. Simcse: Simple contrastive learning of sentence embeddings.
 arXiv preprint arXiv:2104.08821, 2021.