Fix infinite loop in setup

backend/email/README.md

@@ -8,6 +8,7 @@ First, install the dependencies:
 
 ```sh
 yarn install
+yarn setup // to install the correct next config in the .react-email folder, with the right aliases
 ```
 
 Then, run the development server:

backend/email/package.json

@@ -6,9 +6,9 @@
     "build": "tsc -b",
     "predev": "cp next.config.js .react-email/next.config.js",
     "dev": "email dev --port 3001",
-    "postinstall": "echo 'Setting up email dev, stop the process when it says that react email is ready and then run yarn dev' && yarn dev",
     "lint": "npx eslint . --max-warnings 0",
     "lint-fix": "npx eslint . --fix",
+    "setup": "echo 'Setting up email dev, stop the process when it says that react email is ready and then run yarn dev' && yarn dev",
     "test": "jest --config jest.config.ts --passWithNoTests",
     "typecheck": "npx tsc --noEmit"
   },