fix(bug): 修复某些情况下直链无法正常使用的 BUG

src/main/java/im/zhaojun/zfile/model/entity/ShortLinkConfig.java

@@ -13,11 +13,10 @@ public class ShortLinkConfig {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Integer id;
 
-    @Column(name = "`key`")
     private String key;
 
     private String url;
 
     private Date createDate;
 
-}
+}