Fix dev-install script

Author: martinRenou

dev-install.sh

@@ -47,6 +47,6 @@ pip install -v -e "./python/ipywidgets[test]"
 if test "$skip_jupyter_lab" != yes; then
     echo -n "jupyterlab_ipywidgets"
     pip install jupyter_packaging
-    pip install -ve ./python/jupyterlab_widgets
-    jupyter labextension develop ./python/jupyterlab_widgets --overwrite
+    pip install -v ./python/jupyterlab_widgets
+    jupyter labextension develop jupyterlab_widgets --overwrite
 fi