Update Link to Docs for Jetpack Content Distribution Settings

[BrookeDot]

Description

The Jetpack Content Distribution page has been moved on the WPVIP Docs site, this PR updates the URL to point the correct page.

Changelog Description

Updated

• Update link to Jetpack Content Distribution Documentation when a non-production site may be public.

Pre-review checklist

Please make sure the items below have been covered before requesting a review:

• [ ] This change works and has been tested locally or in Codespaces (or has an appropriate fallback).
• [ ] This change works and has been tested on a sandbox.
• [ ] This change has relevant unit tests (if applicable).
• [ ] This change uses a rollout method to ease with deployment (if applicable - especially for large scale actions that require writes).
• [x] This change has relevant documentation additions / updates (if applicable).
• [x] I've created a changelog description that aligns with the provided examples.

Pre-deploy checklist

• [ ] VIP staff: Ensure any alerts added/updated conform to internal standards (see internal documentation).

Steps to Test

Merge the PR, and then set add_filter( 'option_blog_public', '__return_true' ); to true. Click the link to ensure it goes to the correct page and not a 400

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 29.55%. Comparing base (5b6f4e5) to head (3e4f832). Report is 13 commits behind head on develop.

Files with missing lines	Patch %	Lines
blogpublic-notice.php	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #5813 +/- ## ============================================= + Coverage 29.53% 29.55% +0.01% Complexity 4780 4780 ============================================= Files 282 282 Lines 20602 20590 -12 ============================================= Hits 6085 6085 + Misses 14517 14505 -12 ```

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