Merge pull request #94 from cagov/jan-15-content-update

Alt text guidance text update

docs/pages/content-design/principles/build-accessibility-from-start.md

@@ -95,7 +95,7 @@ Link text like **click here**, **read more**, and **more** are not useful to peo
 
 ### Add alt text to images
 
-Screen readers look for alt text. [Add useful alt text to images](https://webaim.org/techniques/alttext/) so screen readers can describe images to people who use them.
+Screen readers look for alt text. [Write alt text](https://www.nngroup.com/articles/write-alt-text/) that helps people who use screen readers.
 
 <div class="leftright-nav-container">
     <div class="left-nav"><a class="internal-link" href="/content-design/principles/meet-your-audience-where-they-are/">Meet your audience where they are</a></div>

docs/pages/content-design/recommended-reading.md

@@ -35,10 +35,8 @@ These are the style guides we look at when we have a new content question. We’
 ### Accessibility
 
 * [Web Accessibility Toolkit](https://dor.ca.gov/Home/WebAccessibilityToolkit) is a comprehensive guide to digital accessibility at the state. It’s maintained by Disability Works California (formerly the Department of Rehabilitation).
-* Web Accessibility Initiative is the leading internet accessibility standards organization.
-  * [Cognitive Accessibility Guidance](https://www.w3.org/WAI/WCAG2/supplemental/#-cognitive-accessibility-guidance). It helps you make content understood by people with cognitive and learning disabilities.
-  * [An alt decision tree](https://www.w3.org/WAI/tutorials/images/decision-tree/) is a tool we use when deciding whether an image needs to have alt text.
-* [How to: write good Alt Text](https://supercooldesign.co.uk/blog/how-to-write-good-alt-text) is good general guidance for writing alt text.
+* [Cognitive Accessibility Guidance](https://www.w3.org/WAI/WCAG2/supplemental/#-cognitive-accessibility-guidance) helps you make content understood by people with cognitive and learning disabilities.
+* [Alt Text: What to Write](https://www.nngroup.com/articles/write-alt-text/) is good general guidance for writing alt text.
 
 ### Content design