docs: Fix typos in FAQ, add section on creating a reproduction

[tom-fletcher]

Component / Package Name:

This PR contains:

• [ ] bugfix
• [ ] feature
• [ ] refactor
• [x] documentation
• [ ] other

Are tests included?

• [ ] yes (bugfixes and features will not be merged without tests)
• [x] no

Breaking Changes?

• [ ] yes (breaking changes will not be merged unless absolutely necessary)
• [x] no

If yes, please include "BREAKING CHANGES:" in the first commit message body, followed by a description of what is breaking.

List any relevant issue numbers:

Description

Fixes some minor typos in the FAQ document.

Also added a section with information on why a minimal repro is required, plus links to help create a repro.