Add link to LDAP env vars to LDAP configuration section

source/installation/config.html.md

@@ -83,7 +83,7 @@ plm instance new
 plm users new --admin
 ```
 
-Note if you want to use LDAP: you should still create an administrator account, at least to give admin rights to your own LDAP account once it's registered.
+Note if you want to [use LDAP](../../environment/#ldap): you should still create an administrator account, at least to give admin rights to your own LDAP account once it's registered.
 
 On **Windows**, there might be an error creating the admin user. To get around this, you need to run:
 ```