Fix untranslated post titles (zh_cn)

stomar · stomar · commit 6f3a0954fd3b · 2018-07-05T22:15:38.000+02:00
diff --git a/zh_cn/news/_posts/2017-10-10-ruby-2-5-0-preview1-released.md b/zh_cn/news/_posts/2017-10-10-ruby-2-5-0-preview1-released.md
@@ -1,6 +1,6 @@
 ---
 layout: news_post
-title: "Ruby 2.5.0-preview1 Released"
+title: "Ruby 2.5.0-preview1 已发布"
 author: "naruse"
 translator: "安道"
 date: 2017-10-10 00:00:00 +0000
diff --git a/zh_cn/news/_posts/2018-05-31-ruby-2-6-0-preview2-released.md b/zh_cn/news/_posts/2018-05-31-ruby-2-6-0-preview2-released.md
@@ -1,6 +1,6 @@
 ---
 layout: news_post
-title: "Ruby 2.6.0-preview2 Released"
+title: "Ruby 2.6.0-preview2 已发布"
 author: "naruse"
 translator: "Delton Ding"
 date: 2018-05-31 00:00:00 +0000
