[doc] fix foreign key constraint error
[doc] fix foreign key constraint error

jojohappy/falcon-plus,open-falcon/falcon-plus,jojohappy/falcon-plus,open-falcon/falcon-plus,open-falcon/falcon-plus,jojohappy/falcon-plus,jojohappy/falcon-plus,taomaree/falcon-plus,open-falcon/falcon-plus,taomaree/falcon-plus,jojohappy/falcon-plus,open-falcon/falcon-plus,taomaree/falcon-plus,taomaree/falcon-plus,taomaree/falcon-plus,jojohappy/falcon-plus,taomaree/falcon-plus