Update download_repo.md

book/download_repo.md

@@ -30,9 +30,11 @@ git clone https://gitlab.pasteur.fr/iah-public/20241008_remote_python_bioimage_a
 ### More about Git
 Git is a version control system. A version control system (VCS) manages and tracks changes to files over time, allowing multiple users to collaborate efficiently on projects. It records a history of changes, supports branching for parallel work, and helps merge or resolve conflicts. It ensures a consistent project state and enables reverting to previous versions when needed. 
 
-![git workflow](git_workflow.png)
-
+<p align="center">
+  <img src="git_workflow.png" />
+</p>
 
+Image [source](https://hackolade.com/help/Teamcollaboration.html)
 We could summarize the key principles of Git as follows: 
 
 - **Tracking changes:** Git records a history of changes (commits) to a project, making it easy to review, undo, or revert to previous versions.