Move actions as usage's subdirectory and update comparsion zh-cn version (#24719)

As title.

Co-authored-by: Giteabot <[email protected]>

doc/installation/comparison.zh-cn.md

@@ -1,6 +1,6 @@
 ---
 date: "2019-02-14T11:51:04+08:00"
-title: "横向对比 Gitea 与其它 Git 托管工具"
+title: "对比 Gitea 与其它 Git 托管工具"
 slug: "comparison"
 weight: 5
 toc: false
@@ -15,7 +15,7 @@ menu:
     identifier: "comparison"
 ---
 
-# 横向对比 Gitea 与其它 Git 托管工具
+# 对比 Gitea 与其它 Git 托管工具
 
 这里列出了 Gitea 与其它一些 Git 托管工具之间的异同，以便确认 Gitea 是否能够满足您的需求。
 

doc/usage/actions/quickstart.en-us.md

@@ -85,7 +85,7 @@ And you can see the new runner in the management page:
 
 ![view runner](/images/usage/actions/view-runner.png)
 
-You can find more information by visiting [Act runner]({{< relref "doc/actions/act-runner.en-us.md" >}}).
+You can find more information by visiting [Act runner]({{< relref "doc/usage/actions/act-runner.en-us.md" >}}).
 
 ### Use Actions