minor improvments to 'information for web authors' (mdn#33839)

* minor improvments to 'information for web authors'

* Apply suggestions from code review

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

files/en-us/web/accessibility/information_for_web_authors/index.md

@@ -8,29 +8,27 @@ page-type: guide
 
 ## Guidelines and Regulations
 
-1. [<abbr>ARIA</abbr> Authoring Practices Guide (<abbr>APG</abbr>)](https://www.w3.org/WAI/ARIA/apg/)
+- [<abbr>ARIA</abbr> Authoring Practices Guide (<abbr>APG</abbr>)](https://www.w3.org/WAI/ARIA/apg/)
 
-   Guide to accessibility semantics defined by the Accessible Rich Internet Application (<abbr>ARIA</abbr>) specification to create accessible web experiences. Describes how to apply accessibility semantics to common design patterns and widgets, providing design patterns and functional examples.
+  - : Guide to accessibility semantics defined by the Accessible Rich Internet Application (<abbr>ARIA</abbr>) specification to create accessible web experiences. Describes how to apply accessibility semantics to common design patterns and widgets, providing design patterns and functional examples.
 
-2. [Web Content Accessibility Guidelines (<abbr>WCAG</abbr>)](https://www.w3.org/WAI/standards-guidelines/wcag/)
+- [Web Content Accessibility Guidelines (<abbr>WCAG</abbr>)](https://www.w3.org/WAI/standards-guidelines/wcag/)
 
-   Another important set of guidelines from the W3C _Web Accessibility Initiative (<abbr>WAI</abbr>)_. The European Union is looking to base their upcoming accessibility regulations on these guidelines. These guidelines are discussed on the [<abbr>WAI</abbr> interest group discussion list](https://www.w3.org/WAI/about/groups/waiig/#mailinglist).
+  - : Another important set of guidelines from the W3C _Web Accessibility Initiative (<abbr>WAI</abbr>)_. The European Union is looking to base their upcoming accessibility regulations on these guidelines. These guidelines are discussed on the [<abbr>WAI</abbr> interest group discussion list](https://www.w3.org/WAI/about/groups/waiig/#mailinglist).
 
-3. [ARIA on this site](/en-US/docs/Web/Accessibility/ARIA)
-
-   <abbr>MDN</abbr> guide to all the [ARIA roles](/en-US/docs/Web/Accessibility/ARIA/Roles) and [ARIA properties](/en-US/docs/Web/Accessibility/ARIA/Attributes), including best practices, related roles and properties, and examples.
+- [ARIA on this site](/en-US/docs/Web/Accessibility/ARIA)
+  - : <abbr>MDN</abbr> guide to all the [ARIA roles](/en-US/docs/Web/Accessibility/ARIA/Roles) and [ARIA properties](/en-US/docs/Web/Accessibility/ARIA/Attributes), including best practices, related roles and properties, and examples.
 
 ## How-to's
 
-1. [Accessibility for frontend developers](https://accessibility.digital.gov/front-end/getting-started/)
-
-   A brief guide from the U.S. General Services administration's Technology Transformation Services covering several accessibility topics with links to "how-to" videos and to related WCAG references.
+- [Accessibility for frontend developers](https://accessibility.digital.gov/front-end/getting-started/)
 
-2. [Accessible Web Page Authoring](https://www.ibm.com/able/requirements/requirements/)
+  - : A brief guide from the U.S. General Services administration's Technology Transformation Services covering several accessibility topics with links to "how-to" videos and to related WCAG references.
 
-   IBM has made their accessibility requirements that need to be met public and interactive.
+- [Accessible Web Page Authoring](https://www.ibm.com/able/requirements/requirements/)
+  - : IBM has made their accessibility requirements that need to be met public and interactive.
 
-### Automated Checking & Repair
+## Automated Checking & Repair
 
 Use a tool to quickly check for common errors in your browser.