Header fonts are hard to distinguish

[offchan42]

I think the header font should look different from header level 2 and header level 3 or something like that.
Because it can be confusing whether Manual Deployment is a section that follows the previous one or it's the new section.
I was thinking that I need to follow everything when in fact I just need to follow Deploying section. This is because I mistakenly thought Manual Deployment was the required continuation of Deploying section.

Here is example of clear difference:

Header 1

Header 2

Header 3

The above image came from https://docs.determined.ai/latest/how-to/installation/aws.html#aws-manual-deployment

[vishnu2kmohan]

Thanks for the feedback @off99555, we'll look into this and keep you posted.

[vishnu2kmohan]

We updated the docs theme recently @off99555, please let us know if we can close out this issue.

cc @shiyuann

[offchan42]

Looks good!