treewide: fix typos

modules/home/wm/default.nix

@@ -58,7 +58,7 @@ in
               service = "some-service-name";
             }
           ];
-          description = "list of block configurations, merged with the defauls";
+          description = "list of block configurations, merged with the defaults";
         };
       };
     };

modules/home/wm/screen-lock/default.nix

@@ -2,7 +2,7 @@
 let
   cfg = config.my.home.wm.screen-lock;
 
-  notficationCmd =
+  notificationCmd =
     let
       duration = toString (cfg.notify.delay * 1000);
       notifyCmd = "${lib.getExe pkgs.libnotify} -u critical -t ${duration}";
@@ -48,7 +48,7 @@ in
           "-notify"
           "${toString cfg.notify.delay}"
           "-notifier"
-          notficationCmd
+          notificationCmd
         ];
       };
     };