fix: Remove @ from Auth SSR import path. (#6837)

Author: jimblanc

src/pages/[platform]/build-a-backend/server-side-rendering/nextjs/index.mdx

@@ -246,7 +246,7 @@ Dynamic rendering is based on a user session extracted from an incoming request.
 
 ```jsx
 import { cookies } from 'next/headers';
-import { getCurrentUser } from '@aws-amplify/auth/server';
+import { getCurrentUser } from 'aws-amplify/auth/server';
 import { runWithAmplifyServerContext } from '@/utils/amplifyServerUtils';
 
 // This page always dynamically renders per request

src/pages/gen2/build-a-backend/server-side-rendering/index.mdx

@@ -216,7 +216,7 @@ Dynamic rendering is based on a user session extracted from an incoming request.
 
 ```jsx
 import { cookies } from 'next/headers';
-import { getCurrentUser } from '@aws-amplify/auth/server';
+import { getCurrentUser } from 'aws-amplify/auth/server';
 import { runWithAmplifyServerContext } from '@/utils/amplifyServerUtils';
 
 // This page always dynamically renders per request