docs(shortcut): update move first/last meta key on Mac

Author: marjune163

README.md

@@ -276,10 +276,10 @@ server [options]
 
 ## Shortcut key for default page template
 - `←`, `→`: move focus between path items
-- `Ctrl`/`Cmd` + `←`: move focus to first path item
-- `Ctrl`/`Cmd` + `→`: move focus to last path item
+- `Ctrl`/`Opt` + `←`: move focus to first path item
+- `Ctrl`/`Opt` + `→`: move focus to last path item
 - `↑`, `↓`: move focus between file items
-- `Ctrl`/`Cmd` + `↑`: move focus to first file item
-- `Ctrl`/`Cmd` + `↓`: move focus to last file item
+- `Ctrl`/`Opt` + `↑`: move focus to first file item
+- `Ctrl`/`Opt` + `↓`: move focus to last file item
 - Repeat inputting same character will look for next file that prefixes with it.
 - Non-repeat inputs will be remembered as a string in short time to look for next file prefix match.

README.zh-CN.md

@@ -274,10 +274,10 @@ server [选项]
 
 ## 默认页面模板的快捷键
 - `←`, `→`：使焦点在路径项之间移动
-- `Ctrl`/`Cmd` + `←`：把焦点移动到第一个路径项
-- `Ctrl`/`Cmd` + `→`：把焦点移动到最后一个路径项
+- `Ctrl`/`Opt` + `←`：把焦点移动到第一个路径项
+- `Ctrl`/`Opt` + `→`：把焦点移动到最后一个路径项
 - `↑`, `↓`：使焦点在文件项之间移动
-- `Ctrl`/`Cmd` + `↑`：把焦点移动到第一个文件项
-- `Ctrl`/`Cmd` + `↓`：把焦点移动到最后一个文件项
+- `Ctrl`/`Opt` + `↑`：把焦点移动到第一个文件项
+- `Ctrl`/`Opt` + `↓`：把焦点移动到最后一个文件项
 - 重复输入相同字符将查找下一个前缀匹配该字符的文件。
 - 输入不重复的字符，将在短时间内被记忆为字符串，用于查找下一个前缀匹配的文件。