spell fix (#167)

tools/goctl/model/sql/parser/error.go

@@ -7,5 +7,5 @@ import (
 var (
 	unSupportDDL        = errors.New("unexpected type")
 	tableBodyIsNotFound = errors.New("create table spec not found")
-	errPrimaryKey       = errors.New("unexpected joint primary key")
+	errPrimaryKey       = errors.New("unexpected join primary key")
 )