doc: Updated readme to include note about MSDSS

Author: Nixxen

readme.md

@@ -48,6 +48,8 @@ scoop install extras/youtube-music
 
 Alternately you can use [Winget](https://learn.microsoft.com/en-us/windows/package-manager/winget/), Windows 11s official CLI package manager to install the `th-ch.YouTubeMusic` package.
 
+*Note: Microsoft Defender SmartScreen might block the installation since it is from an "unknown publisher". This is also true for the manual installation when trying to run the executable(.exe) after a manual download here on github (same file).*
+
 ```
 winget install th-ch.YouTubeMusic
 ```