nixos/transmission: Allow others to read the directory

Directory mode 755 is standard for running services. Without this,
downloadDirPermissions doesn't have any use since other users can't even
look inside the main transmission directory

nixos/modules/services/torrent/transmission.nix

@@ -23,7 +23,8 @@ let
     for DIR in "${homeDir}" "${settingsDir}" "${fullSettings.download-dir}" "${fullSettings.incomplete-dir}"; do
       mkdir -p "$DIR"
     done
-    chmod 700 "${homeDir}" "${settingsDir}"
+    chmod 755 "${homeDir}"
+    chmod 700 "${settingsDir}"
     chmod ${downloadDirPermissions} "${fullSettings.download-dir}" "${fullSettings.incomplete-dir}"
     cp -f ${settingsFile} ${settingsDir}/settings.json
   '';