Revert entrypoint web to http in example config

Author: rcthomas

docs/source/etcd.md

@@ -229,7 +229,7 @@ This is an example setup for using JupyterHub and TraefikEtcdProxy managed by an
    [api]
 
    # the public port where traefik accepts http requests
-   [entryPoints.web]
+   [entryPoints.http]
    address = ":8000"
 
    # the port on localhost where the traefik api should be found