Add how to launch java module

docs/source/installation.md

@@ -21,9 +21,16 @@ You only need to know Nextflow version installed on genobioinfo.
 * See corresponding help [here](https://genotoul-bioinfo.pages.mia.inra.fr/use-nextflow-nfcore-course/pages/nextflow_usage/).
 * Keep in mind the last version of Nextflow installed (>=v20).
 
+...
+
 ```{warning}
 You must use Nextflow versions available [here](http://bioinfo.genotoul.fr/index.php/how-to-use/?software=How_to_use_SLURM_Nextflow).
 Don't use `bioinfo/nfcore-Nextflow` versions of Nextflow.
+How to know which Java module I have to load in genologin ?
+For example: 
+module show bioinfo/Nextflow/24.04.2
+Display content of "How_to_use_SLURM_Nextflow" file which is in each directory of all installed software
+more /usr/local/bioinfo/src/Nextflow/How_to_use_SLURM_Nextflow
 ```
 
 ## II. Install metagWGS