fix summary parsing

Signed-off-by: Xe Iaso <me@xeiaso.net>

src/book.ts

@@ -110,7 +110,7 @@ export const createAndParseSummary = async (
       ch.shift();
       ch.pop();
       return {
-        title: ch[0].slice(1, -1) as string,
+        title: ch[0] as string,
         summary: ch[1] as string,
       } as ChapterListItem;
     }) as ChapterListItem[];