原始連結
https://ak77now-my.sharepoint.com/:u:/g/personal/avdrive_ak77now_onmicrosoft_com/ETh2JYQ2sDlGtfdkDYiohUIBLBUNaVibTkUHaE0orSiTxw

想要替換成這樣：
https://ak77now-my.sharepoint.com/:u:/g/personal/avdrive_ak77now_onmicrosoft_com/ETh2JYQ2sDlGtfdkDYiohUIBLBUNaVibTkUHaE0orSiTxw?download=1

也就是在網址最尾端加上?download=1

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解答(PTT的kuro)：
https://www.ptt.cc/bbs/EzHotKey/M.1551619341.A.B5F.html

#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
#Persistent
; #Warn  ; Enable warnings to assist with detecting common errors.
SendMode Input  ; Recommended for new scripts due to its superior speed and reliability.
SetWorkingDir %A_ScriptDir%  ; Ensures a consistent starting directory.

OnClipboardChange:
if (regexMatch(clipboard, "(https://ak77now-my\.sharepoint\.com/:u:/g/personal/avdrive_ak77now_onmicrosoft_com/\w+)", match))
{
  clipboard = %match1%?download=1
}
return