`TAddress` on `assertAccountsDecoded` must be plural

The `assertAccountsDecoded` of `@solana/addresses` has a type parameter `TAddress`. This param is not plural, which implies that although `assertAccountsDecoded` operates over an array of addresses, the type parameter would enforce that every account has the same address.

Both `TAddress` and `TData` should probably be plural, and the return type should map over them to convert from something like `Account` to `Account`