@prisma/client のインポート元を修正 (#845)

Author: chelproc

docs/3-web-servers/08-database/_samples/forum/.gitignore

@@ -1,2 +1,3 @@
 /node_modules
 /.env
+/generated

docs/3-web-servers/08-database/_samples/forum/main.mjs

@@ -1,5 +1,5 @@
 import express from "express";
-import { PrismaClient } from "@prisma/client";
+import { PrismaClient } from "./generated/prisma/index.js";
 
 const app = express();
 app.use(express.urlencoded({ extended: true }));