Merge pull request #14 from BoatraceOpenAPI/fix/typo

fix: rename variable $program to $previews

Author: shimomo

src/PreviewScraper.php

@@ -68,7 +68,7 @@ private function normalize(array $previews): array
 
         foreach (array_values($previews) as $data) {
             foreach (array_values($data) as $preview) {
-                $program['boats'] = isset($preview['boats'])
+                $previews['boats'] = isset($preview['boats'])
                     ? array_values((array) $preview['boats'])
                     : [];
                 $newPreviews[] = $preview;