Add Jupyter Server documentation link to Foundations

Author: krassowski

_data/documentation.yml

@@ -45,4 +45,5 @@ Deployment:
 Foundations:
   Jupyter Client: https://jupyter-client.readthedocs.io/en/latest/
   Jupyter Core: https://jupyter-core.readthedocs.io/en/latest/
+  Jupyter Server: https://jupyter-server.readthedocs.io/
   Jupyter Alabaster Theme: https://jupyter-alabaster-theme.readthedocs.io/en/latest/