Fix the command to run next build with Node.js --heap-prof flag

docs/02-app/01-building-your-application/06-optimizing/13-memory-usage.mdx

@@ -20,7 +20,7 @@ To look for memory issues, you can record a heap profile from Node.js and load i
 In your terminal, pass the `--heap-prof` flag to Node.js when starting your Next.js build:
 
 ```sh
-node --heap-prof next build
+node --heap-prof node_modules/next/dist/bin/next build
 ```
 
 At the end of the build, a `.heapprofile` file will be created by Node.js.