feat(eslint-plugin): [prefer-at] docs fixes

Co-authored-by: Josh Goldberg ✨ <git@joshuakgoldberg.com>

packages/eslint-plugin/docs/rules/prefer-at.md

@@ -13,21 +13,8 @@ There are two ways to get the last item of the array:
 
 `arr.at(-1)` is a cleaner equivalent to `arr[arr.length - 1]`.
 
-This rule supports the following types:
-
-- `string` or `String`
-- `Array`
-- `Int8Array`
-- `Uint8Array`
-- `Uint8ClampedArray`
-- `Int16Array`
-- `Uint16Array`
-- `Int32Array`
-- `Float32Array`
-- `Uint32Array`
-- `Float64Array`
-- `BigInt64Array`
-- `BigUint64Array`
+This rule suggests code use `arr.at(-1)`, as it's cleaner than `arr[arr.length - 1]`.
+It supports built-in array and string types, including integer arrays such as `Int8Array`.
 
 ## Options