CTOs should not have an apostrophe
Jargone - first pass
Style guide 'eg' usage
Style guide 'ie' usage
Add CTO tag to pieces of guidance
Change title
Update after reader complaint
Attempt to simplify
Fix typo
Add link
Hyphenate consistently
Hyphenation sweep

Attempt to follow style guide.

https://www.gov.uk/designprinciples/styleguide#hyphenation
Merge pull request #140 from alphagov/cto-changes

Various suggested improvements to the new CTO content
Fix merge conflicts in performance-platform.md