Incorrect link for ChatML guide

[noah-gil]

In Chapter 11 Section 2, the link in the following line directs the user to a configuration item, not a guide:

Here’s a guide on ChatML

This is also the same link used in the note just under it:

For example, the SmolLM2-135M-Instruct model uses this configuration.

I'm not sure of the intended destination, but it may be the Chat Templating guide.