Update README.md

README.md

@@ -63,7 +63,7 @@ DatasetDict({
         num_rows: 10246
     })
 })
->>> book = ds['train'][0]  # one of works
+>>> book = ds['train'][0]  # one of the works
 >>> book['meta']['作品名']
 'ウェストミンスター寺院'
 >>> text = book['text']  # main content