missing question mark on one of the onboarding tour screens

[LaurenWags]

Description

On the onboarding tour slide titled "When do you receive rewards", there should be a question mark at the end of this title per #13488 (comment). Note, this applies to both narrow (from panel) and wide (from brave://rewards) views as it is missing in both.

Per discussion with @codybanxs this question mark should be added.

Steps to Reproduce

1. Open either narrow or wide onboarding tour
2. Go to the third slide/screen

Actual result:

question mark at the end of the title is missing:

Expected result:

Should read "When do you receive rewards?" per #13488 (comment)

Reproduces how often:

easily

Brave version (brave://version info)

Brave	1.20.95 Chromium: 88.0.4324.96 (Official Build) beta (x86_64)
Revision	68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS	macOS Version 10.15.7 (Build 19H15)

Brave	1.21.36 Chromium: 88.0.4324.96 (Official Build) nightly (x86_64)
Revision	68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS	macOS Version 10.15.7 (Build 19H15)

Version/Channel Information:

• Can you reproduce this issue with the current release? n/a not available in 1.19.x
• Can you reproduce this issue with the beta channel? yes 1.20.x
• Can you reproduce this issue with the nightly channel? yes 1.21.x

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? n/a
• Does the issue resolve itself when disabling Brave Rewards? n/a
• Is the issue reproducible on the latest version of Chrome? n/a

Miscellaneous Information:

cc @codybanxs @brave/legacy_qa @rebron

[btlechowski]

Reproduced on

Brave	1.20.97 Chromium: 88.0.4324.96 (Official Build) dev (64-bit)
Revision	68dba2d8a0b149a1d3afac56fa74648032bcf46b-refs/branch-heads/4324@{#1784}
OS	Ubuntu 18.04 LTS

In Polish locale.

[LaurenWags]

Verified passed with

Brave | 1.24.46 Chromium: 90.0.4430.41 (Official Build) nightly (x86_64)
-- | --
Revision | e9c92b1eaca8487e212f3f6bc081fdb6d4863759-refs/branch-heads/4430@{#723}
OS | macOS Version 10.15.7 (Build 19H524)

Verified STR from description.

Narrow view	Wide view