Update prisma.mdx (#12286)

docs/pages/getting-started/adapters/prisma.mdx

@@ -523,7 +523,7 @@ This will create an SQL migration file and execute it:
 npm exec prisma migrate dev
 ```
 
-Note that you will need to specify your database connection string in the environment variable `DATABASE_URL`. You can do this by setting it in a `.env` file at the root of your project. Note Prisma doesn't support `.env.local` syntax, it must be named `.env`. For more information, check out their [environment variables docs](https://www.prisma.io/docs/orm/more/development-environment/environment-variables/using-multiple-env-files).
+Note that you will need to specify your database connection string in the environment variable `DATABASE_URL`. You can do this by setting it in a `.env` file at the root of your project.
 
 ### Generate Prisma Client