Fix lang/README.md formatting for GitLab renderer

lang/README.md

@@ -1,15 +1,14 @@
 To create a new locale:
 - Copy lang/en_US.utf8.php to a new file (e.g. `lang/es_ES.utf8.php`)
 - Edit the new file, change "class DefaultLang" to "class Lang" so it looks like this:
-```
 
+```
 <?php
 class Lang {
     public function __construct() {
        ...
     }
 }
-
 ```
 - Translate all array assignments, e.g. `$array["title.bans"] = 'Baneos';`
 - Edit inc/settings.php, set `this->lang` to your locale. Example: `$this->lang = 'es_ES.utf8';`