Update README.md

README.md

@@ -9,7 +9,7 @@ metrics:
 - cross_entropy
 ---
 
-**(!) _Don't forget to preprocess unknown_tokens and substitute them with <|endoftext|>. Otherwise the <unk> tokens in dataset will be split into the '<', 'unk' and '>' tokens_**
+**(!) _Don't forget to preprocess unknown_tokens and substitute them with <|endoftext|>. Otherwise the \<unk\> tokens in dataset will be split into the '<', 'unk' and '>' tokens_**
 **Dependence of the cross entropy loss on the length of the context for prediction**
 
 - x-axis*128 = context length