chore: fix formatting in tokens service

Signed-off-by: SurbhiAgarwal1 <agarwalsurbhi1807@gmail.com>

Author: SurbhiAgarwal1

token/services/tokens/validation_test.go

@@ -92,7 +92,6 @@ func TestValidateAppendRequest(t *testing.T) {
 		assert.Contains(t, err.Error(), "token metadata too large")
 	})
 
-
 	t.Run("WalletIDTooLarge", func(t *testing.T) {
 		req := &AppendRequest{
 			Tokens: []TokenToAppend{