Twenty Nineteen: Apply coding standards fix from running composer format.

Follow up to [52149].

See #54392.

git-svn-id: https://develop.svn.wordpress.org/trunk@52182 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-content/themes/twentynineteen/inc/template-tags.php

@@ -208,7 +208,7 @@ if ( ! function_exists( 'twentynineteen_comment_form' ) ) :
 
 			comment_form(
 				array(
-					'title_reply'  => null,
+					'title_reply' => null,
 				)
 			);
 		}