zh-CN: fix link (#1387)

Author: justjavac

po/zh-CN.po

@@ -1410,7 +1410,7 @@ msgid ""
 "The [Concurrency in Rust](../concurrency.md) deep dive is a full day class "
 "on classical as well as `async`/`await` concurrency."
 msgstr ""
-"`[深入探究并发](../concurrency.md)`课程为期一天,旨在介绍传统并发和 `async`/"
+"[深入探究并发](../concurrency.md)课程为期一天,旨在介绍传统并发和 `async`/"
 "`await` 并发。"
 
 #: src/running-the-course/course-structure.md:53