docs(translations): point broken tutorial link to Internet Archive co…

…py (apache#23683)

docs/docs/contributing/translations.mdx

@@ -107,7 +107,7 @@ Run the following command to update the language files with the new extracted st
 You can then translate the strings gathered in files located under
 `superset/translation`, where there's one folder per language. You can use [Poedit](https://poedit.net/features)
 to translate the `po` file more conveniently.
-There are some [tutorials in the wiki](https://wiki.lxde.org/en/Translate_*.po_files_with_Poedit).
+Here is [a tutorial](https://web.archive.org/web/20220517065036/https://wiki.lxde.org/en/Translate_*.po_files_with_Poedit).
 
 To perform the translation on MacOS, you can install `poedit` via Homebrew: