chore: fix function name in comment

Signed-off-by: clonefetch <c0217@outlook.com>

pkg/controllers/syncer/syncer_test.go

@@ -47,7 +47,7 @@ func (s *mockSyncer) naiveTranslateUpdate(ctx *synccontext.SyncContext, vObj cli
 	return newPObj
 }
 
-// SyncDown is called when a virtual object was created and needs to be synced down to the physical cluster
+// SyncToHost is called when a virtual object was created and needs to be synced down to the physical cluster
 func (s *mockSyncer) SyncToHost(ctx *synccontext.SyncContext, vObj client.Object) (ctrl.Result, error) {
 	return s.SyncToHostCreate(ctx, vObj, s.naiveTranslateCreate(ctx, vObj))
 }