Add solution to locales in the docs

Author: Lustmored

src/LiveComponent/src/Resources/doc/index.rst

@@ -99,6 +99,7 @@ Oh, and just one more step! Import a routing file from the bundle:
     # config/routes.yaml
     live_component:
         resource: '@LiveComponentBundle/Resources/config/routing/live_component.xml'
+        prefix: '/{_locale}' # comment out if your app is not localised
 
 That's it! We're ready!