Update README.md

README.md

-% Counts simulations  & DESEQ2 investigations
+#Counts simulations  & DESEQ2 investigations
 
 Purpose: 
     1) Understand how DESEQ2 works
@@ -6,7 +6,7 @@ Purpose:
     2) Refined biological protocol (seqeuncing effort, ...)
 
 
-# About DESEQ2
+## About DESEQ2
 
 The differential expression analysis uses a generalized linear model of the form:
 Kij ∼ NB(µij , α i )
@@ -24,11 +24,11 @@ Experiments without replicates do not allow for estimation of the dispersion of
 expected value for each group, which is critical for differential expression analysis. Analysis with-out replicates is no longer supported since v1.22.
 
 
-# Investigation of µ effect 
+## Investigation of µ effect 
 
 <img src="./img/fig_mu_effect.svg">
 
-# Investigation of µ effect 
+## Investigation of alpha effect 
 
 <img src="./img/fig_size_effect.svg">