Translate app/assets/locales/en.json in ru (#6036)

100% translated source file: 'app/assets/locales/en.json'
on 'ru'.

Co-authored-by: transifex-integration[bot] <43880903+transifex-integration[bot]@users.noreply.github.com>

Author: transifex-integration[bot]

app/assets/locales/ru.json

@@ -176,7 +176,7 @@
     "recordings": "Записи",
     "processing": "Записи обрабатываются...",
     "name": "Имя",
-    "length": "Длина",
+    "length": "Продолжительность",
     "users": "Пользователи",
     "visibility": "Видимость",
     "formats": "Форматы",