Merge pull request #19650 from vngrs/fix_for_i18n_documentation

change REQUEST_URI to PATH_INFO

guides/source/i18n.md

@@ -201,7 +201,7 @@ end
 If your application includes a locale switching menu, you would then have something like this in it:
 
 ```ruby
-link_to("Deutsch", "#{APP_CONFIG[:deutsch_website_url]}#{request.env['REQUEST_URI']}")
+link_to("Deutsch", "#{APP_CONFIG[:deutsch_website_url]}#{request.env['PATH_INFO']}")
 ```
 
 assuming you would set `APP_CONFIG[:deutsch_website_url]` to some value like `http://www.application.de`.