docs: prefer the new way of enabling modules for exampleauth.

closes: #1477

docs/simplesamlphp-googleapps.md

@@ -89,11 +89,15 @@ After you have successfuly tested that everything is working with the simple `ex
 Configuring the authentication source
 -------------------------------------
 
-The `exampleauth:UserPass` authentication source is part of the `exampleauth` module. This module isn't enabled by default, so you will have to enable it. This is done by creating a file named `enable` in `modules/exampleauth/`.
-
-On unix, this can be done by running (from the SimpleSAMLphp installation directory):
-
-    touch modules/exampleauth/enable
+The `exampleauth:UserPass` authentication module is part of the `exampleauth` module. This module isn't enabled by default, so you will have to enable it. In
+`config.php`, search for the `module.enable` key and set `exampleauth` to true:
+
+```
+    'module.enable' => [
+         'exampleauth' => true,
+         …
+    ],
+```
 
 The next step is to create an authentication source with this module. An authentication source is an authentication module with a specific configuration. Each authentication source has a name, which is used to refer to this specific configuration in the IdP configuration. Configuration for authentication sources can be found in `config/authsources.php`.
 

docs/simplesamlphp-idp.md

@@ -84,12 +84,15 @@ In this guide, we will use the `exampleauth:UserPass` authentication module. Thi
 Configuring the authentication module
 -------------------------------------
 
-The `exampleauth:UserPass` authentication module is part of the `exampleauth` module. This module isn't enabled by default, so you will have to enable it. This is done by creating a file named `enable` in `modules/exampleauth/`.
+The `exampleauth:UserPass` authentication module is part of the `exampleauth` module. This module isn't enabled by default, so you will have to enable it. In
+`config.php`, search for the `module.enable` key and set `exampleauth` to true:
 
-On unix, this can be done by running (from the SimpleSAMLphp
-installation directory):
-
-    touch modules/exampleauth/enable
+```
+    'module.enable' => [
+         'exampleauth' => true,
+         …
+    ],
+```
 
 The next step is to create an authentication source with this module. An authentication source is an authentication module with a specific configuration. Each authentication source has a name, which is used to refer to this specific configuration in the IdP configuration. Configuration for authentication sources can be found in `config/authsources.php`.