Fix Hook & HookList in Swagger (#6432) (#6440)

Backport from #6432

routers/api/v1/swagger/repo.go

@@ -61,14 +61,14 @@ type swaggerResponseReferenceList struct {
 // swagger:response Hook
 type swaggerResponseHook struct {
 	// in:body
-	Body []api.Branch `json:"body"`
+	Body api.Hook `json:"body"`
 }
 
 // HookList
 // swagger:response HookList
 type swaggerResponseHookList struct {
 	// in:body
-	Body []api.Branch `json:"body"`
+	Body []api.Hook `json:"body"`
 }
 
 // Release