fix: correct Russian auto-turn translations (#1566)

## Summary

* **What is the goal of this PR?**
Fix inaccurate Russian UI text for the reader auto-turn feature and make
the affected Russian labels consistent with how adjacent UI strings are
formatted.

* **What changes are included?**
Updated Russian translations in `lib/I18n/translations/russian.yaml`:
- changed `Auto Turn` text from wording that implied screen rotation to
wording that means automatic page turning
- adjusted a few Russian prefix/separator strings to include spacing
where the UI concatenates labels with dynamic values

## Screenshots

| Before| After |
|--------|--------|
| <img width="480" height="800" alt="image"
src="https://github.com/user-attachments/assets/db416dd2-6174-4a46-bd3a-6f52d1cc01cb"
/>| <img width="480" height="800" alt="image"
src="https://github.com/user-attachments/assets/dd9055e0-d4f1-459d-bd40-60fc4970d458"
/>|



---

### AI Usage

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please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**NO**_

lib/I18n/translations/russian.yaml

@@ -175,8 +175,8 @@ STR_UNNAMED: "Без имени"
 STR_NO_SERVER_URL: "URL сервера не настроен"
 STR_FETCH_FEED_FAILED: "Не удалось получить ленту"
 STR_PARSE_FEED_FAILED: "Не удалось обработать ленту"
-STR_NETWORK_PREFIX: "Сеть:"
+STR_NETWORK_PREFIX: "Сеть: "
-STR_IP_ADDRESS_PREFIX: "IP-адрес:"
+STR_IP_ADDRESS_PREFIX: "IP-адрес: "
 STR_ERROR_GENERAL_FAILURE: "Ошибка: Общая ошибка"
 STR_ERROR_NETWORK_NOT_FOUND: "Ошибка: Сеть не найдена"
 STR_ERROR_CONNECTION_TIMEOUT: "Ошибка: Тайм-аут соединения"
@@ -257,10 +257,10 @@ STR_GO_HOME_BUTTON: "На главную"
 STR_SYNC_PROGRESS: "Синхронизировать прогресс"
 STR_DELETE_CACHE: "Удалить кэш книги"
 STR_DELETE: "Удалить"
-STR_CHAPTER_PREFIX: "Глава:"
+STR_CHAPTER_PREFIX: "Глава: "
 STR_DISPLAY_QR: "Показать страницу в виде QR-кода"
-STR_PAGES_SEPARATOR: "стр.  |"
+STR_PAGES_SEPARATOR: " стр. | "
-STR_BOOK_PREFIX: "Книга:"
+STR_BOOK_PREFIX: "Книга: "
 STR_CALIBRE_URL_HINT: "Для Calibre добавьте /opds к URL"
 STR_PERCENT_STEP_HINT: "Влево/Вправо: 1%  Вверх/Вниз: 10%"
 STR_SYNCING_TIME: "Синхронизация времени..."
@@ -282,11 +282,11 @@ STR_NO_REMOTE_MSG: "Удалённый прогресс не найден"
 STR_UPLOAD_PROMPT: "Отправить текущую позицию?"
 STR_UPLOAD_SUCCESS: "Прогресс отправлен!"
 STR_SYNC_FAILED_MSG: "Ошибка синхронизации"
-STR_SECTION_PREFIX: "Раздел"
+STR_SECTION_PREFIX: "Раздел "
 STR_UPLOAD: "Отправить"
 STR_BOOK_S_STYLE: "Стиль книги"
 STR_EMBEDDED_STYLE: "Встроенный стиль"
 STR_OPDS_SERVER_URL: "URL OPDS сервера"
 STR_SCREENSHOT_BUTTON: "Сделать снимок экрана"
-STR_AUTO_TURN_ENABLED: "Авто-поворот включён: "
+STR_AUTO_TURN_ENABLED: "Автоперелистывание: "
-STR_AUTO_TURN_PAGES_PER_MIN: "Авто-поворот (Страниц в минуту)"
+STR_AUTO_TURN_PAGES_PER_MIN: "Автоперелистывание (стр./мин)"