Use existing constant as version in the extension credits

Add newline at the end of the i18n file, otherwise Translatewiki.net export script would break.

Change-Id: I5e4165f8848c70569f6d4b47a227aac879055ab2

UniversalLanguageSelector.i18n.php

@@ -37,4 +37,4 @@ $messages['qqq'] = array(
 	'UniversalLanguageSelector' => 'Extension name',
 	'uls-desc' => 'Extension description',
 	'uls-select-content-language' => 'Main heading in the language selector popup.',
-);
+);