[website] inconsistent ordering on Explanations on Menu vs ToC

[mwachs5]

Type of issue: Bug Report

Please provide the steps to reproduce the problem:

Go to the website, click chisel3 link: https://www.chisel-lang.org/chisel3/docs/introduction.html

Click the "explanations" link either on that page or on the sidebar.

What is the current behavior?

Note that that page has a ToC of the sections that encourages users to read them in that order. It has gotten out of sync with the sidebar, which is not in a consistent or sensical order (e.g. Connectable article is #3 which is way too early on the sidebar, but probably too late in the ToC version).

Also there are two sections on the sidebar Intrinsic and Intrinsic Modules with the same content.

There may be other mismatches / things that aren't in a sensical order for the reader.

Source for the sidebar is here: https://github.com/chipsalliance/chisel/blob/main/website/docs/src/main/resources/microsite/data/menu.yml

Source for the ToC is here: https://github.com/chipsalliance/chisel/blob/main/docs/src/explanations/explanations.md

What is the expected behavior?

The Sidebar should be in same order as ToC, and both should be ordered by a "read things in this order".

Please tell us about your environment:

Google Chrome

Other Information

What is the use case for changing the behavior?