osascript, xattr, pmset, say, screencapture: add link (#7368)

pages.zh/osx/osascript.md

@@ -1,6 +1,7 @@
 # osascript
 
 > 在命令行中运行指定的 AppleScript 或 JavaScript 脚本程序。
+> 更多信息：<https://ss64.com/osx/osascript.html>.
 
 - 运行一个 AppleScript 命令：
 

pages.zh/osx/pmset.md

@@ -2,6 +2,7 @@
 
 > 配置 macOS 电源管理设置，就像在系统首选项 > 节能程序中一样。
 > 修改设置的命令必须以 `sudo` 开头。
+> 更多信息：<https://ss64.com/osx/pmset.html>.
 
 - 显示当前电源管理设置：
 

pages.zh/osx/say.md

@@ -1,6 +1,7 @@
 # say
 
 > 将文本转换为语音。
+> 更多信息：<https://ss64.com/osx/say.html>.
 
 - 大声说出一个句子：
 

pages.zh/osx/xattr.md

@@ -1,6 +1,7 @@
 # xattr
 
 > 用于扩展文件系统属性的实用程序。
+> 更多信息：<https://ss64.com/osx/xattr.html>.
 
 - 列出 键：值 列表，显示指定文件的值扩展属性：
 

pages/osx/osascript.md

@@ -1,6 +1,7 @@
 # osascript
 
 > Run AppleScript or JavaScript for Automation (JXA) from the command-line.
+> More information: <https://ss64.com/osx/osascript.html>.
 
 - Run an AppleScript command:
 

pages/osx/pmset.md

@@ -2,6 +2,7 @@
 
 > Configure macOS power management settings, as one might do in System Preferences > Energy Saver.
 > Commands that modify settings must begin with `sudo`.
+> More information: <https://ss64.com/osx/pmset.html>.
 
 - Display the current power management settings:
 

pages/osx/say.md

@@ -1,6 +1,7 @@
 # say
 
 > Converts text to speech.
+> More information: <https://ss64.com/osx/say.html>.
 
 - Say a phrase aloud:
 

pages/osx/screencapture.md

@@ -1,6 +1,7 @@
 # screencapture
 
 > Utility to take screenshots and screen recordings.
+> More information: <https://ss64.com/osx/screencapture.html>.
 
 - Take a screenshot and save it to a file:
 

pages/osx/xattr.md

@@ -1,6 +1,7 @@
 # xattr
 
 > Utility to work with extended filesystem attributes.
+> More information: <https://ss64.com/osx/xattr.html>.
 
 - List key:value extended attributes for a given file: