Update docs for all spelling errors, and add auth0 session and spec.presence

Signed-off-by: Joe Patterson <jrwpatterson@gmail.com>

docs/auth/auth0/provider.md

@@ -37,6 +37,8 @@ auth:
         audience: ${AUTH_AUTH0_AUDIENCE}
         connection: ${AUTH_AUTH0_CONNECTION}
         connectionScope: ${AUTH_AUTH0_CONNECTION_SCOPE}
+  session:
+    secret: 'supersecret'
 ```
 
 The Auth0 provider is a structure with three configuration keys:
@@ -46,6 +48,8 @@ The Auth0 provider is a structure with three configuration keys:
   page
 - `domain`: The Application domain, found on the Auth0 Application page
 
+Because Auth0 requires a session you need to give the session a secret key.
+
 ## Optional Configuration
 
 - `audience`: The intended recipients of the token