Docs: Correct `@return` type for `Theme_Upgrader::check_parent_theme_filter()`.

Props diddledan.
Fixes #48570.
Built from https://develop.svn.wordpress.org/trunk@47057


git-svn-id: http://core.svn.wordpress.org/trunk@46857 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/class-theme-upgrader.php

@@ -91,7 +91,7 @@ class Theme_Upgrader extends WP_Upgrader {
 	 * @param bool  $install_result
 	 * @param array $hook_extra
 	 * @param array $child_result
-	 * @return type
+	 * @return bool
 	 */
 	public function check_parent_theme_filter( $install_result, $hook_extra, $child_result ) {
 		// Check to see if we need to install a parent theme

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-47056';
+$wp_version = '5.4-alpha-47057';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.