diff --git a/wp-admin/includes/media.php b/wp-admin/includes/media.php
index 3cb96b2bb4..8768c75ee2 100644
--- a/wp-admin/includes/media.php
+++ b/wp-admin/includes/media.php
@@ -1521,7 +1521,7 @@ function get_attachment_fields_to_edit( $post, $errors = null ) {
  *
  * @global WP_Query $wp_the_query WordPress Query object.
  *
- * @param int   $post_id Optional. Post ID.
+ * @param int   $post_id Post ID.
  * @param array $errors  Errors for attachment, if any.
  * @return string
  */
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 5101e142bf..0950f79465 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -565,7 +565,12 @@ function human_readable_duration( $duration = '' ) {
  *
  * @param string     $mysqlstring   Date or datetime field type from MySQL.
  * @param int|string $start_of_week Optional. Start of the week as an integer. Default empty string.
- * @return array Keys are 'start' and 'end'.
+ * @return int[] {
+ *     Week start and end dates as Unix timestamps.
+ *
+ *     @type int $start The week start date as a Unix timestamp.
+ *     @type int $end   The week end date as a Unix timestamp.
+ * }
  */
 function get_weekstartend( $mysqlstring, $start_of_week = '' ) {
 	// MySQL string year.
diff --git a/wp-includes/general-template.php b/wp-includes/general-template.php
index 4ab79e8ddc..4a9835a478 100644
--- a/wp-includes/general-template.php
+++ b/wp-includes/general-template.php
@@ -189,7 +189,7 @@ function get_template_part( $slug, $name = null, $args = array() ) {
 	$templates[] = "{$slug}.php";
 
 	/**
-	 * Fires before a template part is loaded.
+	 * Fires before an attempt is made to locate and load a template part.
 	 *
 	 * @since 5.2.0
 	 * @since 5.5.0 The `$args` parameter was added.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 1a0830ae2d..7937cf75b2 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51956';
+$wp_version = '5.9-alpha-51957';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.