docs: used the NPX CLI tool across docs (#4099)

docs/content/troubleshooting/create-medusa-app-errors.md

@@ -8,7 +8,7 @@ To resolve this issue, make sure you change into the `backend` directory of the
 
 ```bash npm2yarn
 cd backend
-npm run start
+npx @medusajs/medusa-cli develop
 ```
 
 ## Other Errors

docs/content/troubleshooting/errors-after-update.md

@@ -5,7 +5,7 @@ If you run into errors after updating Medusa and its dependencies, it's highly r
 If there's no upgrade guide for your version, make sure that you ran the `migrations` command in the root directory of your Medusa backend:
 
 ```bash
-medusa migrations run
+npx @medusajs/medusa-cli migrations run
 ```
 
 This ensures your backend has the latest database structure required. Then, try running your Medusa backend again and check whether the same error occurs.

docs/content/troubleshooting/signing-in-to-admin.md

@@ -10,7 +10,7 @@ password: supersecret
 Alternatively, you can create your own users using the Medusa CLI tool:
 
 ```bash
-medusa user -e some@email.com -p somepassword
+npx @medusajs/medusa-cli user -e some@email.com -p somepassword
 ```
 
 ---

docs/content/troubleshooting/transaction-error-in-checkout.md

@@ -41,7 +41,7 @@ database_database: "./medusa-db.sql",
 Then, migrate the database schema to the new PostgreSQL database:
 
 ```bash
-medusa migrations run
+npx @medusajs/medusa-cli migrations run
 ```
 
 :::tip