diff --git a/wp-admin/includes/class-wp-site-health.php b/wp-admin/includes/class-wp-site-health.php
index b6a4a678f3..3db80ea2b6 100644
--- a/wp-admin/includes/class-wp-site-health.php
+++ b/wp-admin/includes/class-wp-site-health.php
@@ -2371,7 +2371,7 @@ class WP_Site_Health {
 		 * Add or modify which site status tests are run on a site.
 		 *
 		 * The site health is determined by a set of tests based on best practices from
-		 * both the WordPress Hosting Team, but also web standards in general.
+		 * both the WordPress Hosting Team and web standards in general.
 		 *
 		 * Some sites may not have the same requirements, for example the automatic update
 		 * checks may be handled by a host, and are therefore disabled in core.
@@ -2381,26 +2381,41 @@ class WP_Site_Health {
 		 * to complete should run asynchronously, to avoid extended loading periods within wp-admin.
 		 *
 		 * @since 5.2.0
-		 * @since 5.6.0 Added the `async_direct_test` array key.
-		 *              Added the `skip_cron` array key.
+		 * @since 5.6.0 Added the `async_direct_test` array key for asynchronous tests.
+		 *              Added the `skip_cron` array key for all tests.
 		 *
-		 * @param array $test_type {
-		 *     An associative array, where the `$test_type` is either `direct` or
-		 *     `async`, to declare if the test should run via Ajax calls after page load.
+		 * @param array[] $tests {
+		 *     An associative array of direct and asynchronous tests.
 		 *
-		 *     @type array $identifier {
-		 *         `$identifier` should be a unique identifier for the test that should run.
-		 *         Plugins and themes are encouraged to prefix test identifiers with their slug
-		 *         to avoid any collisions between tests.
+		 *     @type array[] $direct {
+		 *         An array of direct tests.
 		 *
-		 *         @type string   $label             A friendly label for your test to identify it by.
-		 *         @type mixed    $test              A callable to perform a direct test, or a string AJAX action
-		 *                                           to be called to perform an async test.
-		 *         @type boolean  $has_rest          Optional. Denote if `$test` has a REST API endpoint.
-		 *         @type boolean  $skip_cron         Whether to skip this test when running as cron.
-		 *         @type callable $async_direct_test A manner of directly calling the test marked as asynchronous,
-		 *                                           as the scheduled event can not authenticate, and endpoints
-		 *                                           may require authentication.
+		 *         @type array ...$identifier {
+		 *             `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to
+		 *             prefix test identifiers with their slug to avoid collisions between tests.
+		 *
+		 *             @type string   $label     The friendly label to identify the test.
+		 *             @type callable $test      The callback function that runs the test and returns its result.
+		 *             @type bool     $skip_cron Whether to skip this test when running as cron.
+		 *         }
+		 *     }
+		 *     @type array[] $async {
+		 *         An array of asynchronous tests.
+		 *
+		 *         @type array ...$identifier {
+		 *             `$identifier` should be a unique identifier for the test. Plugins and themes are encouraged to
+		 *             prefix test identifiers with their slug to avoid collisions between tests.
+		 *
+		 *             @type string   $label             The friendly label to identify the test.
+		 *             @type string   $test              An admin-ajax.php action to be called to perform the test, or
+		 *                                               if `$has_rest` is true, a URL to a REST API endpoint to perform
+		 *                                               the test.
+		 *             @type bool     $has_rest          Whether the `$test` property points to a REST API endpoint.
+		 *             @type bool     $skip_cron         Whether to skip this test when running as cron.
+		 *             @type callable $async_direct_test A manner of directly calling the test marked as asynchronous,
+		 *                                               as the scheduled event can not authenticate, and endpoints
+		 *                                               may require authentication.
+		 *         }
 		 *     }
 		 * }
 		 */
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 09a69c1c43..c694bb55ed 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51296';
+$wp_version = '5.9-alpha-51297';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.