Reference notebook where everything is known to work (#428)

Author: mcbarton

.github/workflows/deploy-pages.yml

@@ -184,7 +184,7 @@ jobs:
           micromamba create -n xeus-lite-host jupyterlite-core -c conda-forge
           micromamba activate xeus-lite-host
           python -m pip install jupyterlite-xeus jupyter_server
-          jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }} --contents notebooks --output-dir dist
+          jupyter lite build --XeusAddon.prefix=${{ env.PREFIX }} --contents notebooks/xeus-cpp-lite-demo.ipynb --output-dir dist
           cp ${{ env.PREFIX }}/bin/xcpp.data dist/extensions/@jupyterlite/xeus/static
           cp ${{ env.PREFIX }}/lib/libclangCppInterOp.so dist/extensions/@jupyterlite/xeus/static