Administration: Fix typos in wp_admin_notice() arguments in a few instances.

Follow-up to [56570], [56599].

Props dlh, mukesh27, sumitbagthariya16.
Fixes #59830.
Built from https://develop.svn.wordpress.org/trunk@57084


git-svn-id: http://core.svn.wordpress.org/trunk@56595 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/update.php

@@ -345,9 +345,9 @@ function update_nag() {
 	wp_admin_notice(
 		$msg,
 		array(
-			'type'              => 'warning',
-			'additonal_classes' => array( 'update-nag', 'inline' ),
-			'paragraph_wrap'    => false,
+			'type'               => 'warning',
+			'additional_classes' => array( 'update-nag', 'inline' ),
+			'paragraph_wrap'     => false,
 		)
 	);
 }