Remove unnecessary quotes

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

users/configs/btop/default.nix

@@ -1,10 +1,10 @@
 { user ? throw "user argument is required", gpu ? false }: { config, lib, pkgs, ... }:
 
 let
-  hmConfig = config.home-manager.users."${user.name}";
+  hmConfig = config.home-manager.users.${user.name};
 in
 {
-  home-manager.users."${user.name}" = {
+  home-manager.users.${user.name} = {
     programs = {
       btop = {
         enable = true;
@@ -30,9 +30,7 @@ in
     theme.extraConfig = "${lib.meta.getExe (pkgs.writeShellApplication {
       name = "reload-btop";
       runtimeInputs = with pkgs; [ procps ];
-      text = ''
-        pkill btop -SIGUSR2
-      '';
+      text = "pkill btop -SIGUSR2";
     })} &";
   };
 }