docs: Redundant "See also:" link in ContentChild documentation

[dariobraun]

📚 Docs or angular.io bug report

Description

Inside the ContentChild documentation under "See also:" there is a link linking to the documentation itself. It feels like the link should be linking to another reference or not be there at all.

🔬 Minimal Reproduction

What's the affected URL?**

https://angular.io/api/core/ContentChild

[jithil-kore]

@dariobraun PR Created #28334

[jithil-kore]

Pr has been merged. Please close this case. @jenniferfell

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