fix migration log (#5497) (#6191)

* fix migration log

* Update migrations.go

---------

Co-authored-by: Carlos Rodriguez <carlos@interchain.io>
Co-authored-by: DimitrisJim <d.f.hilliard@gmail.com>
(cherry picked from commit 7c2996a)

Co-authored-by: yihuang <huang@crypto.com>

modules/apps/transfer/keeper/migrations.go

@@ -98,7 +98,7 @@ func (m Migrator) MigrateTotalEscrowForDenom(ctx sdk.Context) error {
 		m.keeper.SetTotalEscrowForDenom(ctx, totalEscrow)
 	}
 
-	m.keeper.Logger(ctx).Info("successfully set total escrow for %d denominations", totalEscrowed.Len())
+	m.keeper.Logger(ctx).Info("successfully set total escrow", "number of denominations", totalEscrowed.Len())
 	return nil
 }