Support asset localization (#1027)

Signed-off-by: Daniel Gray <dng@disroot.org>

crowdin.yml

@@ -2,8 +2,8 @@ project_id_env: CROWDIN_PROJECT_ID
 api_token_env: CROWDIN_PERSONAL_TOKEN
 "preserve_hierarchy": true
 files:
-- source: "/docs/**/*.en.md"
+- source: "/docs/**/*.en.*"
-  translation: "/docs/**/%file_name%.%locale_with_underscore%.md"
+  translation: "/docs/**/%file_name%.%locale_with_underscore%.%file_extension%"
   translation_replace:
     "en.": ""
   update_option: update_as_unapproved