Fix mislabeled privacy setting

[Cauchon]

**By submitting this pull request, I confirm the following:

• I have read and understood the contributors guide, as well as this entire template.
• I have made only one major change in my proposed changes.
• I have commented my proposed changes within the code.
• I have tested my proposed changes.
• I am willing to help maintain this change if there are issues with it later.
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• It is compatible with the EUPL 1.2 license
• I have squashed any insignificant commits. (git rebase)
• I have Signed Off all commits. (git commit --signoff)

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What does this PR aim to accomplish?:

Fixed a mislabeled option in settings where it references a non-existent "Top Ads" section. It should instead reference "Top Blocked Domains"

How does this PR accomplish the above?:

Fixed a mislabeled option in settings

What documentation changes (if any) are needed to support this PR?:

None

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[yubiuser]

DCO is complaining:
https://docs.pi-hole.net/guides/github/dco/

https://docs.pi-hole.net/guides/github/how-to-signoff/

[PromoFaux]

DCO is complaining:

As it's a grammar/copy change rather than code - I'm happy to set DCO to pass manually

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-ftl-v5-13-web-v5-10-and-core-v5-8-released/52254/1