Fix parsing error.

Author: Littlesqx

.gitignore

@@ -6,3 +6,4 @@ sftp-config.json
 composer.lock
 .subsplit
 .php_cs.cache
+index.php

src/BookFactory.php

@@ -46,6 +46,6 @@ public static function make($body): Book
             ->setSummary($params['summary'])
             ->setCover($params['images']['large'])
             ->setTags(array_column($params['tags'], 'name'))
-            ->setAltUrl($params['alt_url']);
+            ->setAltUrl($params['alt']);
     }
 }

tests/ApplicationTest.php

@@ -77,7 +77,7 @@ public function testGetBook(string $isbn)
             200, [],
             '{"title":"","price":"","author":[],"publisher":""'
             .',"author_intro":"","subtitle":"","isbn13":"","images":{"large":""},'
-            .'"catalog":"","pubdate":"","tags":[],"summary":"","alt_url":""}'
+            .'"catalog":"","pubdate":"","tags":[],"summary":"","alt":""}'
         );
         $client = \Mockery::mock(Client::class);
         $client->allows()