Creating documentation of Authorization Configuration

Author: klinux

docs/AUTHORIZATION_CONFIGURATION.md

@@ -86,7 +86,10 @@ The `Authorization Configuration` is used to configure a connection to an Keyclo
         </authConfig>
     </authConfigs>
     <admins>
-        <user>[email protected]</user>
+        <user>your_account_from_keycloak</user>
     </admins>
 </security>
-```
+```
+> If you are using email as account in Keycloak, replace your_account_from_keycloak with your email address in **user** inside **admins**.
+
+> The account that you are using to configure Keycloak, will become an administrator of GoCD, if you are using the UI to configure.