Renamed "advance" to "advanced"

Fixed doc title

Resources/doc/index.rst

@@ -42,7 +42,7 @@ Reference Guide
    reference/security
    reference/extensions
    reference/events
-   reference/advance
+   reference/advanced
    reference/console
    reference/preview_mode
    reference/troubleshooting

Resources/doc/reference/advance.rst

@@ -1,5 +1,5 @@
-Advance
-=======
+Advanced configuration
+======================
 
 Service Configuration
 ---------------------