fix: filter hook name

src/VkCssOptimize.php

@@ -488,7 +488,7 @@ public static function css_tree_shaking_buffer( $buffer ) {
 					'btn',
 					'btn-primary',
 				);
-				$jsaddlist = apply_filters( 'css_tree_shaking_exclude_classes', $jsaddlist );
+				$jsaddlist = apply_filters( 'css_tree_shaking_js_added_classes', $jsaddlist );
 
 				// CSS の中身が取得できた場合のみ Tree Shaking を反映する
 				if ( ! empty( $css ) ) {