docs: fix favicon

[papb]

Pull Request check-list

Please make sure to review and check all of these items:

• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
• Have you added new tests to prevent regressions?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
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Description of change

Fixes issue #10090 - Similar to PR #10127, but targeting master instead of v4

[codecov]

Codecov Report

Merging #10242 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10242   +/-   ##
=======================================
  Coverage   96.28%   96.28%           
=======================================
  Files          68       68           
  Lines        9796     9796           
=======================================
  Hits         9432     9432           
  Misses        364      364

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[sushantdhiman]

Thanks @papb