Fix layouts/default/66_iso keymap

Keymap had a comma after the last keycode.

Aligned for readability.

layouts/default/66_iso/default_60_iso/keymap.c

@@ -6,6 +6,6 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
         KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC,                   KC_PGDN,
         KC_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_NUHS, KC_ENT,
         KC_LSFT, KC_NUBS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,
-        KC_LCTRL, KC_LALT, KC_LGUI,         KC_SPACE,               KC_RGUI,  KC_RALT,  KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT,
+        KC_LCTL, KC_LALT, KC_LGUI,                            KC_SPC,                    KC_RGUI, KC_RALT, KC_RCTL,          KC_LEFT, KC_DOWN, KC_RGHT
     )
 };