docs: small fixes across documentation (#3815)

docs/content/development/endpoints/example-logged-in-user.md

@@ -13,9 +13,9 @@ This documentation does not explain the basics of [middlewares](./add-middleware
 
 ## Step 1: Create the Middleware
 
-Create the file `src/api/middlewareds/logged-in-user.ts` with the following content:
+Create the file `src/api/middlewares/logged-in-user.ts` with the following content:
 
-```ts title=src/api/middlewareds/logged-in-user.ts
+```ts title=src/api/middlewares/logged-in-user.ts
 import { User, UserService } from "@medusajs/medusa"
 
 export async function registerLoggedInUser(req, res, next) {
@@ -43,7 +43,13 @@ This retrieves the ID of the current user to retrieve an instance of it, then re
 
 ## Step 2: Apply Middleware on Endpoint
 
-Create the file `src/api/routes/create-product.ts` with the following content:
+If you don't have the `cors` package installed, make sure to install it first:
+
+```bash npm2yarn
+npm install cors
+```
+
+Then, create the file `src/api/routes/create-product.ts` with the following content:
 
 ```ts title=src/api/routes/create-product.ts
 import cors from "cors"
@@ -91,7 +97,7 @@ Create the file `src/api/index.ts` with the following content:
 import configLoader from "@medusajs/medusa/dist/loaders/config"
 import createProductRouter from "./routes/create-product"
 
-export default async function (rootDirectory: string) {
+export default function (rootDirectory: string) {
   const config = await configLoader(rootDirectory)
 
   const adminCors = {

docs/content/development/entities/migrations/create.md

@@ -12,7 +12,7 @@ In this document, you’ll learn how to create a [Migration](./overview.mdx) usi
 To create a migration that makes changes to your Medusa schema, run the following command:
 
 ```bash
-npx typeorm migration:create -n UserChanged --dir src/migrations
+npx typeorm migration:create src/migrations/UserChanged
 ```
 
 This will create the migration file in the path you specify. You can use this without the need to install Typeorm's CLI tool. You can then go ahead and make changes to it as necessary.

docs/content/development/services/extend-service.md

@@ -57,7 +57,7 @@ import {
 
 class ProductService extends MedusaProductService {
   // The default life time for a core service is SINGLETON
-  static LIFE_TIME = LifeTime.SCOPED
+  static LIFE_TIME = Lifetime.SCOPED
     
   // ...
 }