Mention "none" download conversion target mime-type in description

public/locales/en.json

@@ -207,7 +207,7 @@
       },
       "conversion": {
         "compression_level": "Compression level",
-        "description": "In case no MIME-Type is defined, the \"default\" one will be used for the conversion.",
+        "description": "In case no MIME-Type is defined, the \"default\" one will be used for the conversion.\nSet \"none\" as the target type to disable conversion for a MIME-Type",
         "mime_type": "MIME-Type",
         "title": "Download conversion"
       },

src/modules/downloads/components/DownloadConversionSetting.tsx

@@ -283,7 +283,7 @@ export const DownloadConversionSetting = ({
             <Dialog open={isDialogOpen} onClose={onCancel}>
                 <DialogTitle>{t('download.settings.conversion.title')}</DialogTitle>
                 <DialogContent>
-                    <DialogContentText sx={{ mb: 2 }}>
+                    <DialogContentText sx={{ mb: 2, whiteSpace: 'pre-line' }}>
                         {t('download.settings.conversion.description')}
                     </DialogContentText>
                     <Stack sx={{ flexDirection: 'column', gap: 3 }}>