Update README.md

README.md

@@ -35,6 +35,7 @@ You must install the following softwares and packages :
 
 - [SNAKEMAKE 5.3.0](https://snakemake.readthedocs.io/en/stable/getting_started/installation.html)
     * Check version and if the program is correctly installed by typing :
+
 ```
 snakemake --version
 ## should give you the output
@@ -76,19 +77,19 @@ Version: 0.7.17-r1188
     * Download `htslib` and `samtools` at : http://www.htslib.org/download/
     * Building each desired package from source is very simple:
 
-```
-cd htslib-1.x
-./configure --prefix=/where/to/install
-make
-make install
-cd ..
-## and similarly for samtools :
-cd samtools-1.x
-./configure --prefix=/where/to/install
-make
-make install
-```
-     * Check version and if programs are correctly installed by typing :
+    ```
+    cd htslib-1.x
+    ./configure --prefix=/where/to/install
+    make
+    make install
+    cd ..
+    ## and similarly for samtools :
+    cd samtools-1.x
+    ./configure --prefix=/where/to/install
+    make
+    make install
+    ```
+    * Check version and if programs are correctly installed by typing :
 
 ```
 samtools --version