"Settings" should be capitalized in Rewards tour, to match Welcome interstitial

[stephendonner]

Description

"Settings" menu-item mention should be capitalized in Rewards tour, to match Welcome interstitial's spelling

Steps to Reproduce

1. new profile, launch Brave
2. on the brave://welcome tour, click "Let's go ->"
3. note that "Settings" is capitalized in "Advanced import options can be found in Settings."
4. click on the BAT icon to invoke the Rewards tour
5. On the 2nd page, "Where do ads show up?", note the lower-cased spelling of "settings" in "You control how often you see these ads in settings."

Actual result:

Expected result:

We should be consistent, and since Settings is a top-level menu item, it's a proper noun and should be capitalized here, too.

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.22.19 Chromium: 89.0.4389.40 (Official Build) nightly (x86_64)
Revision	2c2ed83cd507b23e4845edd09a7d1dfc727daf4b-refs/branch-heads/4389@{#602}
OS	macOS Version 11.2.1 (Build 20D74)

Brave	1.21.51 Chromium: 88.0.4324.152 (Official Build) beta (x86_64)
Revision	6579930fc53b4dc589c042bec9d0a3778326974d-refs/branch-heads/4324@{#2106}
OS	macOS Version 11.2.1 (Build 20D74)

Version/Channel Information:

• Can you reproduce this issue with the current release? Yes
• Can you reproduce this issue with the beta channel? Yes
• Can you reproduce this issue with the nightly channel? Yes