Fix mistake.

lang/zh-CN.json

@@ -79,7 +79,7 @@
   "metrics.average-visit-time": "平均访问时间",
   "metrics.bounce-rate": "跳出率",
   "metrics.browsers": "浏览器",
-  "metrics.countries": "国家",
+  "metrics.countries": "国家/地区",
   "metrics.device.desktop": "桌面电脑",
   "metrics.device.laptop": "笔记本",
   "metrics.device.mobile": "手机",
@@ -91,7 +91,7 @@
   "metrics.filter.raw": "原始",
   "metrics.operating-systems": "操作系统",
   "metrics.page-views": "页面浏览量",
-  "metrics.pages": "网页/地区",
+  "metrics.pages": "网页",
   "metrics.referrers": "来源域名",
   "metrics.unique-visitors": "独立访客",
   "metrics.views": "浏览量",