[1608735260]

Hi, when I'm scanning the English version of the site, I notice that the sidebar's order of the volumes is not correct. The phenomenon strongly suggests that the volumes are sorted with the original name in alphabet order, which should not be the required order.

As volume 1 to volume 10 are in the same hierarchy level with other sections like C++ Feature Cheat Sheet which is not a normal volume, it will be troublesome to assign the sidebar_order field in each index.md to make sure all the orders in documents/en/ are fine. Thus I took a conservative change to solve the problem and already checked it. I suppose this would not be harmful in other situations.

[Charliechen114514]

Hi! Thanks for the fix! I confirmed the root cause on my side: none of the top-level volume directories set sidebar_order, so the sort falls back to a plain name comparison, and "vol10-open-lecture-notes" ends up right after vol1.

I'll merge this once CI is green.

Thanks Again! XD

(sorry for my poor english lol