update: authentication

source/import_documentation/build-existing-app.rst

 How to build a SIB application from sources
-#########################################
+###########################################
 
 Requirements
 ============
@@ -8,7 +8,7 @@ npm 6.7.0
 
 
 Configure the app
-==================
+=================
 Get the code of your app (for the example the SIB App):
 
 .. code-block:: bash
@@ -55,7 +55,7 @@ In this example we are contacting the same server (batman.happy-dev.fr) for all
 If you use a local development server, you should use http://localhost:8000/ instead.
 
 Build the client app
-==================
+====================
 Create your application bundle:
 
 .. code-block:: bash

source/import_documentation/build-full-application.rst

@@ -85,8 +85,8 @@ Let's assume we want to add a menu to our app. We're gonna add the router compon
 =>  `Play with the SiB Builder <https://la-pommeraye.fr/sib-builder//>`__
 
 
-4. Authentification
----------------------
+4. Authentication
+-----------------
 
 .. warning::
     This part is missing