docs: improve 'settings.language' explanation (#2284)

* Fix link to localization file

* Fix the list of available languages in README.md

Author: Evilur

README.md

@@ -579,7 +579,7 @@ Some functionalities are also available when you're using original pdf viewer, b
 | settings.interceptedErrors | [] | Indicates for which errors Surfingkeys will show error page, so that you could use Surfingkeys on those error pages. For example, ["*"] to show error page for all errors, or ["net::ERR_NAME_NOT_RESOLVED"] to show error page only for ERR_NAME_NOT_RESOLVED, please refer to [net_error_list.h](https://github.com/adobe/chromium/blob/master/net/base/net_error_list.h) for complete error list.  |
 | settings.enableEmojiInsertion | false | Whether to turn on Emoji completion in Insert mode. |
 | settings.startToShowEmoji | 2 | How many characters are needed after colon to show emoji suggestion. |
-| settings.language | undefined | The language of the usage popover, only "zh-CN" is added for now, PR for any other language is welcomed, please see [l10n.json](https://github.com/brookhong/Surfingkeys/blob/master/pages/l108.json). |
+| settings.language | undefined | The language of the usage popover, only "zh-CN" and "ru-RU" are added for now, PR for any other language is welcomed, please see [l10n.json](https://github.com/brookhong/Surfingkeys/blob/master/src/pages/l10n.json). |
 | settings.stealFocusOnLoad | true | Whether to prevent focus on input on page loaded, set to true by default so that we could use Surfingkeys directly after page loaded, otherwise we need press `Esc` to quit input. |
 | settings.enableAutoFocus | true | Whether to enable auto focus after mouse click on some widget. This is different with `stealFocusOnLoad`, which is only for the time of page loaded. For example, there is a hidden input box on a page, it is turned to visible after user clicks on some other link. If you don't like the input to be focused when it's turned to visible, you could set this to false. |
 | settings.theme | undefined | To change css of the Surfingkeys UI elements. |