Update readme of @next/bundle-analyzer package (#62804)

Set actual information about output of bundle analyzer.

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Co-authored-by: JJ Kasper <jj@jjsweb.site>

packages/next-bundle-analyzer/readme.md

@@ -42,7 +42,7 @@ Then you can run the command below:
 ANALYZE=true yarn build
 ```
 
-When enabled two HTML files (client.html and server.html) will be outputted to `<distDir>/analyze/`. One will be for the server bundle, one for the browser bundle.
+When enabled three HTML files (client.html, edge.html and nodejs.html) will be outputted to `<distDir>/analyze/`. One will be for the nodejs server bundle, one for the edge server bundle, and one for the browser bundle.
 
 #### Options