Properly parenthesize dynamo_dynamic_indices test (#99823)
I've got the E2E test case which triggered this in https://github.com/pytorch/pytorch/pull/99809
Signed-off-by: Edward Z. Yang <ezyang@meta.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99823
Approved by: https://github.com/voznesenskym
