fix a link

Author: yume-chan

docs/scrcpy/upgrade.mdx

@@ -4,7 +4,7 @@ import DiffTable from "../tango/diff-table";
 
 This page lists changes from version 1.0.0 in Scrcpy-related packages.
 
-This version doesn't include any changes in core packages.
+For changes in other packages, see [this page](../tango/upgrade.mdx).
 
 ## `@yume-chan/adb-scrcpy`