Update _episodes/07-development-setup.md

Co-authored-by: SarahAlidoost <[email protected]>

Author: Rémi Kazeroni

_episodes/07-development-setup.md

@@ -137,7 +137,7 @@ we should choose another name for the new environment in this lesson by:
 ~~~bash
 mamba env create --name a_new_name --file environment.yml
 ~~~
-This will create a new conda environment and install ESMValTool into it with a 
+This will create a new conda environment and install ESMValTool (with all dependencies that are needed for development purposes) into it with a 
 single command.
 
 For more information see [conda managing environments][manage-environments].