Update _config.yml

_config.yml

@@ -73,15 +73,15 @@ latex:
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 # Launch button settings
 launch_buttons:
-  notebook_interface: classic # The interface interactive links will activate ["classic", "jupyterlab"]
-  binderhub_url: "" # The URL of the BinderHub (e.g., https://mybinder.org)
+  notebook_interface: jupyterlab # The interface interactive links will activate ["classic", "jupyterlab"]
+  binderhub_url: "https://mybinder.org" # The URL of the BinderHub (e.g., https://mybinder.org)
   jupyterhub_url: "https://hub.econ-ark.org/" # The URL of the JupyterHub (e.g., https://datahub.berkeley.edu)
   thebe: false # Add a thebe button to pages (requires the repository to run on Binder)
   colab_url: "" # The URL of Google Colab (https://colab.research.google.com)
 
 repository:
   url: https://github.com/econ-ark/DemARK # The URL to your book's repository
-  path_to_book: notebooks # A path to your book's folder, relative to the repository root.
+  path_to_book: . # A path to your book's folder, relative to the repository root.
   branch: master # Which branch of the repository should be used when creating links
 
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