Fixed translation docs typo

build/controllers/TranslationController.php

@@ -15,7 +15,7 @@ use yii\helpers\Html;
 /**
  * TranslationController handles tasks related to framework translations.
  *
- * build translation "../docs/guide" "../docs/guide_ru" "Russian guide translation report" > report_guide_ru.html
+ * build translation "../docs/guide" "../docs/guide-ru" "Russian guide translation report" > report_guide_ru.html
  *
  * @author Alexander Makarov <sam@rmcreative.ru>
  */

docs/internals-ru/translations.md

@@ -30,7 +30,7 @@ Yii переводится на множество языков, в том чи
 в директории `build` и выполнив:
 
 ```
-php build translation "../docs/guide" "../docs/guide_ru" "Russian guide translation report" > report_guide_ru.html
+php build translation "../docs/guide" "../docs/guide-ru" "Russian guide translation report" > report_guide_ru.html
 ```
 
 Если ругается на composer, выполните `composer install` в корневой директории.

docs/internals/translations.md

@@ -39,7 +39,7 @@ After initial work is done you can get what's changed since last translation of
 `build` directory:
 
 ```
-php build translation "../docs/guide" "../docs/guide_ru" "Russian guide translation report" > report_guide_ru.html
+php build translation "../docs/guide" "../docs/guide-ru" "Russian guide translation report" > report_guide_ru.html
 ```
 
 If it will complain about composer, perform `composer install` in the source root dir.