Minor rendering problems in documentation

[rgcoe]

There's a couple minor rendering bugs in the documentation, e.g.,

[michaelcdevin]

Some other rendering problems I've found:

Tutorial 1:

• Lists not rendering in Section 1
  
  

Tutorial 4:

• Lists not rendering in Sections 1.4 and 1.5
  
• Math not rendering right in Section 1.6
  

[michaelcdevin]

Resolved in #339