Various small docs fixes

[yousefmoazzam]

Fixes #479 Fixes #496 Fixes #480 Fixes #491 Fixes #485 Fixes #481 Fixes #489

Checklist

• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] I have made corresponding changes to the documentation