reex67: fix tail comma

keyboards/reex67/keymaps/test/keymap.c

@@ -16,7 +16,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     // |-------+-------+-------+-------+-------+-------|                            |-------+-------+-------+-------+-------+-------+-------+-------|
         KC_LCTL,KC_LGUI,KC_LALT                ,KC_SPC ,                             KC_SPC ,                KC_RALT,KC_RGUI,KC_LEFT,KC_DOWN,KC_RGHT
     // `-------+-------+-------+-------+-------+-------|                            |-------+-------+-------+-------+-------+-------+-------+-------'
-    ),
+    )
 };
 // clang-format on