State-level ad targeting string needs renaming in brave://settings/rewards

[stephendonner]

Description

State-level ad targeting string needs renaming in brave://settings/rewards

Steps to Reproduce

1. install 1.39.18
2. launch Brave
3. open brave://rewards/
4. opt-in to Rewards
5. click on the Settings icon for Brave Private Ads
6. look at the term used there: Regional ad relevance
7. open brave://settings/rewards
8. look at the term used there: State-level ad targeting

This was renamed over in #21291 for brave://rewards, but missed for Settings.

Actual result:

brave://settings/rewards	brave://rewards

Expected result:

It should read Regional ad relevance everywhere.

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.39.18 Chromium: 100.0.4896.60 (Official Build) nightly (x86_64)
Revision	6a5d10861ce8de5fce22564658033b43cb7de047-refs/branch-heads/4896@{#875}
OS	macOS Version 11.6.5 (Build 20G527)

cc @tmancey @Tonev

[Tonev]

@stephendonner @tmancey 👋

👇
brave/brave-core#12847

[GeetaSarvadnya]

Reproduced in Windows 10 x64 - 1.38.75

[stephendonner]

Verified PASSED using

Brave	1.39.39 Chromium: 100.0.4896.79 (Official Build) nightly (x86_64)
Revision	8fb749dcab8700c24213791969e59deb72fee36f-refs/branch-heads/4896@{#1015}
OS	macOS Version 11.6.5 (Build 20G527)

Confirmed the string in brave://settings/rewards now reads Regional ad relevance.