ManualDownloadSheet: Change button text from check to install

We trigger installation if the app is available. Be more clear about it.

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/res/values-zh-rCN/strings.xml

@@ -226,7 +226,6 @@
     <string name="toast_manual_available">恭喜，你请求的版本代码可用，现在下载。</string>
     <string name="toast_manual_unavailable">你请求的版本代码不可用。</string>
     <string name="title_manual_download">手动下载</string>
-    <string name="action_check">检查</string>
     <string name="dialog_desc_native_split">不能通过原生安装程序安装捆绑（拆分）的应用程序，请将选定的安装程序更改为会话安装器、Aurora 服务或 Root 安装器。</string>
     <string name="toast_aas_token_failed">无法生成 AAS 令牌</string>
     <string name="toast_rated_failed">提交评分失败</string>
@@ -420,4 +419,4 @@
     <string name="authentication_required_title">需要身份验证</string>
     <string name="authentication_required_unarchive">请登录 Google Play 账户取消存档该应用！</string>
     <string name="checking_updates">正在检查更新</string>
-</resources>
+</resources>