simple: fix golden test case

dominikh · dominikh · commit a3d5a52bc696 · 2023-08-17T13:37:07.000+02:00
Fixes regression introduced by cee67be.
diff --git a/simple/testdata/src/example.com/CheckLoopCopy/copy_generics.go.golden b/simple/testdata/src/example.com/CheckLoopCopy/copy_generics.go.golden
@@ -1,4 +1,4 @@
-//go:build go1.18
+//go:build go1.20
 
 package pkg
 
