fixed some ghostty

homeManagerModules/programs/ghostty.nix

@@ -23,6 +23,10 @@ in
       settings = {
         font-size = 10;
         font-family = "JetBrains Mono Medium";
+        keybind = [
+          "ctrl+kp_add=increase_font_size:1"
+          "ctrl+kp_subtract=decrease_font_size:1"
+        ];
       };
     };
   };