Changes:

- renamed 'api_mastodon_banner' to 'mastodon_banner' and moved it to 'api'
  configuration group

static/defaults.config.php

@@ -91,10 +91,6 @@ return [
 		// php_path (String)
 		// Location of PHP command line processor.
 		'php_path' => 'php',
-
-		// api_mastodon_banner (String)
-		// Banner for Mastodon API
-		'api_mastodon_banner' => '/images/friendica-banner.jpg',
 	],
 	'system' => [
 		// adjust_poll_frequency (Boolean)
@@ -785,4 +781,9 @@ return [
 		// By default the template cache is stored in several subdirectories.
 		'use_sub_dirs' => true,
 	],
+	'api' => [
+		// mastodon_banner (String)
+		// Banner for Mastodon API
+		'mastodon_banner' => '/images/friendica-banner.jpg',
+	],
 ];