Update README.md

README.md

@@ -43,9 +43,10 @@ Ci-dessous, vous trouverez pour chacune des X tâches, les prompts utilisés, un
 
 
 <details>
-<summary># Sentence similarity</summary>
-Sentence similarity is the task of determining how similar two texts are.   
+<summary><h1>Sentence similarity</h1></summary>
+Sentence similarity is the task of determining how similar two texts are. 
 In our case, the target/output is a score between 0 (the two sentences are semantically distant) and 1 (the two sentences are semantically close).
+  
 ## 18 prompts
 <code>
 'Déterminer le score de similarité entre les deux phrases suivantes. Phrase 1 : "'+sentence1+'"\n Phrase 2 : "'+sentence2+'"',  <br>