add licence badge on readme

README.md

@@ -2,11 +2,9 @@
 
 [![pipeline status](https://gitlab.pasteur.fr/aperrin/pipeline_annotation/badges/master/pipeline.svg)](https://gitlab.pasteur.fr/aperrin/pipeline_annotation/-/commits/master)
 [![coverage report](https://gitlab.pasteur.fr/aperrin/pipeline_annotation/badges/master/coverage.svg)](http://aperrin.pages.pasteur.fr/pipeline_annotation/htmlcov)
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- [![License (AGPL version 3)](https://img.shields.io/badge/license-GNU%20AGPL%20version%203-blue.svg?style=flat-square)](COPYING)
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-
 [![https://www.singularity-hub.org/static/img/hosted-singularity--hub-%23e32929.svg](https://www.singularity-hub.org/static/img/hosted-singularity--hub-%23e32929.svg)](https://singularity-hub.org/collections/4724)
+ 
+ [![License (AGPL version 3)](https://img.shields.io/badge/license-GNU%20AGPL%20version%203-blue.svg?style=flat-square)](COPYING)
 
 This README file provides some essential information to install/use PanACoTA. But it is better to read the [**full documentation**](http://aperrin.pages.pasteur.fr/pipeline_annotation/html-doc), providing more details : [![](doc/source/images/manual.jpg) ](http://aperrin.pages.pasteur.fr/pipeline_annotation/html-doc)