Merge pull request rails#38590 from albertoalmagro/albertoalmagro/use-yml-extension-for-locale-files

[ci skip] Documentation: Use yml extension for locale files example

Author: kaspth

guides/source/i18n.md

@@ -558,25 +558,25 @@ For example, your `config/locales` directory could look like this:
 
 ```
 |-defaults
-|---es.rb
-|---en.rb
+|---es.yml
+|---en.yml
 |-models
 |---book
-|-----es.rb
-|-----en.rb
+|-----es.yml
+|-----en.yml
 |-views
 |---defaults
-|-----es.rb
-|-----en.rb
+|-----es.yml
+|-----en.yml
 |---books
-|-----es.rb
-|-----en.rb
+|-----es.yml
+|-----en.yml
 |---users
-|-----es.rb
-|-----en.rb
+|-----es.yml
+|-----en.yml
 |---navigation
-|-----es.rb
-|-----en.rb
+|-----es.yml
+|-----en.yml
 ```
 
 This way, you can separate model and model attribute names from text inside views, and all of this from the "defaults" (e.g. date and time formats). Other stores for the i18n library could provide different means of such separation.