update readme to use standard exe installer

Author: jjw24

README.md

@@ -49,7 +49,7 @@ Flow Launcher. Dedicated to make your workflow flow more seamlessly. Aimed at be
 
 ### Installation
 
-| [Windows 7 and up installer](https://github.com/Flow-Launcher/Flow.Launcher/releases/latest) | [Portable](https://github.com/Flow-Launcher/Flow.Launcher/releases/latest/download/Flow-Launcher-Portable.zip) | `WinGet install "Flow Launcher"` |
+| [Windows 7 and up installer](https://github.com/Flow-Launcher/Flow.Launcher/releases/latest/download/Flow-Launcher-Setup.exe) | [Portable](https://github.com/Flow-Launcher/Flow.Launcher/releases/latest/download/Flow-Launcher-Portable.zip) | `WinGet install "Flow Launcher"` |
 | --------------------------------- | --------------------------------- | --------------------------------- |
 
 Windows may complain about security due to code not being signed, this will be completed at a later stage. If you downloaded from this repo, you are good to continue the set up.