chore(administration): Generate system config documentation from config.sample.php

admin_manual/configuration_server/config_sample_php_parameters.rst

@@ -2757,6 +2757,30 @@ objectstore
 
 To use swift V3
 
+objectstore
+^^^^^^^^^^^
+
+
+::
+
+	'objectstore' => [
+		'class' => 'OC\\Files\\ObjectStore\\S3',
+		'arguments' => [
+			'bucket' => 'nextcloud',
+			'key' => 'your-access-key',
+			'secret' => 'your-secret-key',
+			'hostname' => 's3.example.com',
+			'port' => 443,
+			'use_ssl' => true,
+			'region' => 'us-east-1',
+			// optional: Maximum number of retry attempts for failed S3 requests
+			// Default: 5
+			'retriesMaxAttempts' => 5,
+		],
+	],
+
+To use S3 object storage
+
 objectstore.multibucket.preview-distribution
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^