[PATCH v1 1/2] app/testpmd: fix modify tag typo

[Ferruh Yigit]

On 2/21/2024 7:10 AM, Rongwei Liu wrote:
> Update the name to the right one: "src_tag_index"
> 
> Fixes: 7ea38955b ("ethdev: update MPLS header modification API")
> Cc: stable at dpdk.org
>
> Signed-off-by: Rongwei Liu <rongweil at nvidia.com>
> Acked-by: Dariusz Sosnowski <dsosnowski at nvidia.com>>

Acked-by: Ferruh Yigit <ferruh.yigit at amd.com>