minor tweak

Author: Rich Harris

content/tutorial/03-sveltekit/07-page-options/02-ssr/README.md

@@ -11,4 +11,4 @@ That said, some components _can't_ be rendered on the server, perhaps because th
 export const ssr = false;
 ```
 
-> Setting `ssr` to `false` inside your root `+layout.server.js` effectively turns your entire app into an SPA.
+> Setting `ssr` to `false` inside your root `+layout.server.js` effectively turns your entire app into a single-page app (SPA).