code example correction

README.md

@@ -48,7 +48,10 @@ once you have the schama files created you can use `pgm` as
 ```go
 package main
 
-import "code.partial.tech/go/pgm"
+import (
+    "code.partial.tech/go/pgm"
+    "myapp/db/user" // scham  create by pgm/cmd
+)
 
 type MyModel struct {
     ID    string
@@ -64,8 +67,8 @@ func main() {
     // Select query to fetch the first record
     // Assumes the schema is defined in the "db" package with a User table
     var v MyModel
-    err := db.User.Select(db.User.ID, db.User.Email).
-        Where(db.User.Email.Like("anki%")).
+    err := db.User.Select(user.ID, user.Email).
+        Where(user.Email.Like("anki%")).
         First(context.TODO(), &v.ID, &v.Email)
     if err != nil {
         println("Error:", err.Error())