Add About successors link to ownership continuity article

[ArthurFay]

Summary

Adds a link to the "About successors" article at the bottom of the ownership continuity article so readers can find more information about what happens after a successor is appointed.

Fixes #40673

Changes made

• Added a link to "About successors" at the bottom of the article:
  • content/repositories/managing-your-repositorys-settings-and-features/repository-access-and-collaboration/maintaining-ownership-continuity-of-your-personal-accounts-repositories.md

Testing

• Checked the article content change locally
• Confirmed the update is a documentation-only change

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Source	Review	Production	What Changed
repositories/managing-your-repositorys-settings-and-features/repository-access-and-collaboration/maintaining-ownership-continuity-of-your-personal-accounts-repositories.md	fpt ghec	fpt ghec

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🤖 This comment is automatically generated.

[Sharra-writes]

@ArthurFay This looks good, except I am going to move it around so it's all part of the same paragraph. After that I'll get it approved.

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