fix Supported Package Managers image

Author: God-damnit-all

README.md

@@ -111,7 +111,7 @@ UniGetUI has a built-in autoupdater. However, it can also be updated like any ot
 
 **NOTE:** All package managers do support basic install, update, and uninstall processes, as well as checking for updates, finding new packages, and retrieving details from a package.
 
-<img src="https://devolutions.net/unigetui/extra/supported-managers.svg"/>
+![image](media/supported-managers.svg)
 
 ✅: Supported on UniGetUI<br>
 ☑️: Not directly supported but can be easily achieved<br>