docs: mention .global.vue filename for global components (#25144)

docs/2.guide/2.directory-structure/1.components.md

@@ -93,7 +93,7 @@ Alternatively, though not recommended, you can register all your components glob
   })
 ```
 
-You can also selectively register some components globally by placing them in a `~/components/global` directory.
+You can also selectively register some components globally by placing them in a `~/components/global` directory, or by using a `.global.vue` suffix in the filename. As noted above, each global component is rendered in a separate chunk, so be careful not to overuse this feature.
 
 ::callout
 The `global` option can also be set per component directory.