fix(settings): fix some links in the privacy modal

[habibayman]

Summary

Followed Peter's report and replaced the links that were caught broken in the privacy modal and are documented in a screen recording in his issue description here.

1. http://localhost:8080/en/channels/#/my-channels?showPolicy=community_standards
   ->
   http://localhost:8080/en/channels/#/my-channels?showPolicy=terms_of_service

2. https://learningequality.org/cookies/
   ->
   https://learningequality.org/cookie-policy/

---

References

• fixes Privacy policy and Terms of service - Broken links #5755

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Reviewer guidance

Navigate to http://localhost:8080/en/channels/#/my-channels?showPolicy=privacy_policy and validate the links are working fine.

I am surprised these changes didn't cause any unit tests to fail though! I think we should write some to verify that

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[marcellamaki]

thanks @habibayman ! manual QA confirms ✅