chore(l10n): update Chinese (Simplified Han script) translations

Currently translated at 100.0% (44 of 44 strings)

Translation: Fossify/File-Manager
Translate-URL: https://hosted.weblate.org/projects/fossify/file-manager/zh_Hans/
Via: Weblate

Author: Sketch6580

app/src/main/res/values-zh-rCN/strings.xml

@@ -43,5 +43,5 @@
     <string name="storage_free">可用</string>
     <string name="total_storage">总存储：%s</string>
     <string name="enable_root_access">启用 root 访问</string>
-    <string name="press_back_twice">需要按两次返回键才能离开应用程序</string>
+    <string name="press_back_twice">需要按两次返回键才能离开应用</string>
 </resources>