Merge pull request #5047 from chilin0525/fix-outdated-wiki-link-for-less-privileged-user

Fix outdated GitHub Wiki links in documentation

docs/source/explanation/concepts.md

@@ -88,7 +88,7 @@ The following authenticators are included with JupyterHub:
   of a ssh server, but providing a web-browser based way to access the
   machine.
 
-There are [plenty of others to choose from](https://github.com/jupyterhub/jupyterhub/wiki/Authenticators).
+There are [plenty of others to choose from](authenticators-reference).
 You can connect to almost any other existing service to manage your
 users. You either use all users from this other service (e.g. your
 company), or enable only the allowed users (e.g. your group's

docs/source/howto/configuration/config-sudo.md

@@ -125,7 +125,7 @@ the shadow password database.
 **Note:** On [Fedora based distributions](https://fedoraproject.org/wiki/List_of_Fedora_remixes) there is no clear way to configure
 the PAM database to allow sufficient access for authenticating with the target user's password
 from JupyterHub. As a workaround we recommend use an
-[alternative authentication method](https://github.com/jupyterhub/jupyterhub/wiki/Authenticators).
+[alternative authentication method](authenticators-reference).
 
 ```bash
 $ ls -l /etc/shadow

docs/source/tutorial/quickstart.md

@@ -90,6 +90,6 @@ To **allow multiple users to sign in** to the Hub server, you must start
 sudo jupyterhub
 ```
 
-The [wiki](https://github.com/jupyterhub/jupyterhub/wiki/Using-sudo-to-run-JupyterHub-without-root-privileges)
+[](howto:config:no-sudo)
 describes how to run the server as a _less privileged user_. This requires
 additional configuration of the system.