diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-admin/includes/class-language-pack-upgrader-skin.php
--- a/wp/wp-admin/includes/class-language-pack-upgrader-skin.php	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-admin/includes/class-language-pack-upgrader-skin.php	Tue Dec 15 13:49:49 2020 +0100
@@ -47,7 +47,7 @@
 
 		echo '<div class="update-messages lp-show-latest">';
 
-		/* translators: 1: name of project, 2: language */
+		/* translators: 1: Project name (plugin, theme, or WordPress), 2: Language. */
 		printf( '<h2>' . __( 'Updating translations for %1$s (%2$s)&#8230;' ) . '</h2>', $name, $this->language_update->language );
 	}
 
@@ -70,8 +70,14 @@
 	 */
 	public function bulk_footer() {
 		$this->decrement_update_count( 'translation' );
-		$update_actions                 = array();
-		$update_actions['updates_page'] = '<a href="' . self_admin_url( 'update-core.php' ) . '" target="_parent">' . __( 'Return to WordPress Updates page' ) . '</a>';
+
+		$update_actions = array(
+			'updates_page' => sprintf(
+				'<a href="%s" target="_parent">%s</a>',
+				self_admin_url( 'update-core.php' ),
+				__( 'Return to WordPress Updates page' )
+			),
+		);
 
 		/**
 		 * Filters the list of action links available following a translations update.