Update README.md

 # Construction of abstract titles embeddings 
 
-##### The main goal of this proyect is to obtain sentence embeddings of 450 abstract titles, apply hierarchical clustering to the resulting vectors and analyze the characteristics of the sentences from each group. We expect that sentences indicating an association between a gene and a disease end up clustered together. 
+The main goal of this proyect is to obtain sentence embeddings of 450 abstract titles, apply hierarchical clustering to the resulting vectors and analyze the characteristics of the sentences from each group. We expect that sentences indicating an association between a gene and a disease end up clustered together. 
 
 
-## Input data sets 
+### Input data sets 
 ```Shell
 \corpora
 ```
-## Sentence embeddings 
+### Sentence embeddings 
 ```Shell
 \embeddings
 ```
-## Programs and commands used 
+### Programs and commands used 
 ```Shell
 \scripts
 ```
\ No newline at end of file