fix: update string for multiple files/folders.

Author: mykh-hailo

owncloudApp/src/main/res/values/strings.xml

@@ -543,14 +543,14 @@
     <string name="move_file_invalid_into_descendent">It is not possible to move a folder into a descendant.</string>
     <string name="move_file_invalid_overwrite">The file exists already in the destination folder.</string>
     <string name="move_file_error">An error occurred while trying to move this file or folder.</string>
-    <string name="move_file_correctly">File moved correctly</string>
+    <string name="move_file_correctly">Item(s) moved correctly</string>
     <string name="forbidden_permissions_move">to move this file</string>
 
     <string name="copy_file_not_found">Unable to copy. Please check whether the file exists.</string>
     <string name="copy_file_invalid_into_descendent">It is not possible to copy a folder into a descendant.</string>
     <string name="copy_file_invalid_overwrite">The file exists already in the destination folder.</string>
     <string name="copy_file_error">An error occurred while trying to copy this file or folder.</string>
-    <string name="copy_file_correctly">File copied correctly</string>
+    <string name="copy_file_correctly">Item(s) copied correctly</string>
     <string name="forbidden_permissions_copy">to copy this file</string>
 
     <string name="go_to_destination_folder">Open Folder</string>