How to connect a Plug wallet to Candid interface?

The answer here points to a 404.

How do I connect my browser wallet to the Candid interface?

I tried

await window?.ic?.plug?.requestConnect({ ["my-canister-id"]}); (using my actual canister id)

“error: missing : after property id” was the result.

How do I do this?

I responded in that thread: Using the Candid UI when an identity is required - #6 by kpeacock