message: [skip ci] increment ordered lists
diff: # Contribution guidelines
  1. [Code style](#code-style)
  -1. [Testing](#testing)
  +2. [Testing](#testing)
  1. [Code coverage](#code-coverage)
  -1. [Tools we use](#tools-we-use)
  -1. [Component patterns](#component-patterns)
  +3. [Tools we use](#tools-we-use)
  +4. [Component patterns](#component-patterns)
  1. [Components with only system props](#components-with-only-system-props)
  1. [Primer CSS components](#primer-css-components)
  -1. [Glossary](#glossary)
  +5. [Glossary](#glossary)
  ## Code Style
  @@ -50,8 +50,8 @@ A code coverage report is included in the `npm test` output, and test coverage d
  ## Tools we use
  1. We use [emotion] to style our components, and [emotion-theming] as the theme provider.
  -1. We use style functions from [styled-system] whenever possible, and styled-systems' `style()` function to create new ones.
  -1. We use [system-components] to reduce the amount of boilerplate needed to implement styled-system functions.
  +2. We use style functions from [styled-system] whenever possible, and styled-systems' `style()` function to create new ones.
  +3. We use [system-components] to reduce the amount of boilerplate needed to implement styled-system functions.
  ## Component patterns
  