tweak readme

readme.md

@@ -22,14 +22,15 @@ Add this flake's `nixosModules.default` to your NixOS imports, and set:
 programs.noshell.enable = true
 ```
 
-Noshell will be configured as the default shell to **ALL** users.
+Noshell will be configured as the default shell to **ALL** users. You might want to
+disable noshell for some user as a fallback, like `users.users.root.shell = pkgs.bashInteractive;`.
 
 ## Why?
 
 Noshell enables some patterns in the NixOS ecosystem, such as:
 
 - Using a shell with a configuration wrapper. As the wrapper is a different program
-  that is not present in `/etc/shells`. See https://github.com/viperML/wrapper-manager .
+  that is not present in `/etc/shells`. See [https://github.com/viperML/wrapper-manager](https://github.com/viperML/wrapper-manager).
 - User-level configuration of the login shell with home-manager (`xdg.configFile."shell".source = lib.getExe pkgs.nushell;`)
 
 It can be useful too outside of NixOS, for example to use a custom build of some shell.