adjust typing for ProcessedSite

Author: leonstafford

src/ProcessedSite.php

@@ -70,6 +70,11 @@ public static function getPaths() : array {
         );
 
         foreach ( $iterator as $filename => $file_object ) {
+
+            /**
+             * @var string $filename
+             */
+
             $base_name = basename( $filename );
             if ( $base_name != '.' && $base_name != '..' ) {
                 $real_filepath = realpath( $filename );