fix: fix broken links (#220)

* fix: fix broken links

* Update adapter.go

---------

Co-authored-by: hsluoyz <hsluoyz@qq.com>

adapter.go

@@ -641,7 +641,7 @@ func (a *Adapter) AddPolicy(sec string, ptype string, rule []string) error {
 // RemovePolicy removes a policy rule from the storage.
 func (a *Adapter) RemovePolicy(sec string, ptype string, rule []string) error {
 	line := a.savePolicyLine(ptype, rule)
-	err := a.rawDelete(a.db, line) //can't use db.Delete as we're not using primary key http://jinzhu.me/gorm/crud.html#delete
+	err := a.rawDelete(a.db, line) //can't use db.Delete as we're not using primary key https://gorm.io/docs/update.html
 	return err
 }
 
@@ -687,8 +687,7 @@ func (a *Adapter) RemovePolicies(sec string, ptype string, rules [][]string) err
 	return a.db.Transaction(func(tx *gorm.DB) error {
 		for _, rule := range rules {
 			line := a.savePolicyLine(ptype, rule)
-			if err := a.rawDelete(tx, line); err != nil { //can't use db.Delete as we're not using primary key http://jinzhu.me/gorm/crud.html#delete
-				return err
+			if err := a.rawDelete(tx, line); err != nil { //can't use db.Delete as we're not using primary key https://gorm.io/docs/update.html
 			}
 		}
 		return nil