Update messages.ftl

Ambiguity in the translation.  Original in English, it means we will have more reward chance. not "missing reward chance",  ignore this pull request if I'm wrong

res/translations/zh-CN/messages.ftl

@@ -209,4 +209,4 @@ notification_farm_error = 一个Space Acres农场出错
 notification_signed_reward_successfully = 成功签署一份奖励 🥳
     .body = 感谢参与 🙌
 notification_missed_reward = 签署奖励失败 😞
-    .body = 很不幸，但马上会有下次啦
+    .body = 很不幸，但很快就会有下一次出块机会