update README file

Author: DenisaCG

README.md

@@ -58,7 +58,7 @@ The `jlpm` command is JupyterLab's pinned version of
 
 ```bash
 micromamba create -n niryo -c conda-forge python nodejs yarn jupyterlab==3.4 jupyter-packaging jupyterlab-language-pack-es-ES jupyterlab-language-pack-fr-FR ipykernel xeus-python xeus-lua
-micromamba activate blockly
+micromamba activate niryo
 # Clone the repo to your local environment
 # Change directory to the jupyterlab_niryo_one directory
 # Install package in development mode
@@ -98,4 +98,4 @@ folder is located. Then you can remove the symlink named `jupyterlab_niryo_one`
 
 ### Packaging the extension
 
-See [RELEASE](RELEASE.md)
+See [RELEASE](RELEASE.md)