[Web] Fix lang strings

data/web/lang/lang.zh.json

@@ -381,7 +381,7 @@
         "max_alias_exceeded": "超出最大别名数",
         "max_mailbox_exceeded": "超出最大邮箱数 (%d / %d)",
         "max_quota_in_use": "邮箱数必须大于等于 %d MiB",
-        "maxquota_empty": "每个邮箱最大配额必须不为nulL",
+        "maxquota_empty": "每个邮箱最大配额必须不为0",
         "mysql_error": "MySQL错误: %s",
         "network_host_invalid": "网络或主机非法: %s",
         "next_hop_interferes": "%s 与下一跳 %s 冲突",
@@ -642,7 +642,7 @@
         "booking_0_short": "永远空闲",
         "booking_custom": "严格限制登记数",
         "booking_custom_short": "严格限制",
-        "booking_ltnulL": "不限制登记数，但会在被登记后显示为繁忙",
+        "booking_ltnull": "不限制登记数，但会在被登记后显示为繁忙",
         "booking_lt0_short": "宽松限制",
         "daily": "每天",
         "deactivate": "禁用",