Docs unclear about custom-named SSH Keys

[Allyson04]

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What article on docs.github.com is affected?

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent

What part(s) of the article would you like to see updated?

The documentation explains how to create SSH Keys and adding to Github, problem is it didn't explain a case where the user already has a default-named key (such as "id_rsa" for RSA keys or "id_ed25519" for ed25519 keys). If the user tries to create a new SSH Key, ssh-keygen may ask to rewrite a previously created key, which is quite problematic, as rewriting another key will effectively delete it without possibility of undoing it. That way, the option of telling the user how to create custom-named SSH key and advising that trying to create a key by the default name can be a problem.

Additional information

No response

[welcome]

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[cmwilson21]

@Allyson04 Thanks for opening an issue and PR!

[github-actions]

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