updated discovery environment link

Author: pwrose

README.md

@@ -61,7 +61,7 @@ This example demonstrates a reproducible 2-step workflow for simulating a phylog
 | [2-SimulateSequences.ipynb](https://nbviewer.jupyter.org/github/jupyter-guide/ten-rules-jupyter/blob/master/example2/2-SimulateSequences.ipynb) | [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/jupyter-guide/ten-rules-jupyter/master?filepath=example2%2F2-SimulateSequences.ipynb) | [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/jupyter-guide/ten-rules-jupyter/master?urlpath=lab/tree/example2%2F2-SimulateSequences.ipynb) | [HTML](https://rawgit.com/jupyter-guide/ten-rules-jupyter/master/example2/2-SimulateSequences.html) |
 
 ## Runnning Jupyter Notebooks on CyVerse/VICE
-The new [VICE (Visual Interactive Computing Environment)](https://cyverse-visual-interactive-computing-environment.readthedocs-hosted.com/en/latest/index.html) in the [CyVerse Discovery Environment](https://www.cyverse.org/discovery-environment) enables users to run Jupyter Lab in a production environment. To use VICE, sign up for a free [CyVerse account](https://www.cyverse.org/create-account).
+The new [VICE (Visual Interactive Computing Environment)](https://cyverse-visual-interactive-computing-environment.readthedocs-hosted.com/en/latest/index.html) in the [CyVerse Discovery Environment](https://www.cyverse.org/discovery%20environment) enables users to run Jupyter Lab in a production environment. To use VICE, sign up for a free [CyVerse account](https://www.cyverse.org/create-account).
 
 [![Vice](vice/vice_badge.png)](https://de.cyverse.org/de/?type=apps&app-id=8ec235d8-f173-11e9-a56f-008cfa5ae621&system-id=de)