Update readme to include article image in acceptance criteria. (#1074)

Author: jenny-alexander

Wireframe/README.md

@@ -15,7 +15,7 @@ There are some provided HTML and CSS files you can use to get started. You can u
 <!--{{<objectives>}}>-->
 
 - [ ] Use semantic HTML tags to structure the webpage
-- [ ] Create three articles, each including a title, summary, and a link
+- [ ] Create three articles, each including an image, title, summary, and a link
 - [ ] Check a webpage against a wireframe layout
 - [ ] Test web code using [Lighthouse](https://programming.codeyourfuture.io/guides/testing/lighthouse)
 - [ ] Use version control by committing often and pushing regularly to GitHub
@@ -26,7 +26,7 @@ There are some provided HTML and CSS files you can use to get started. You can u
 - [ ] Semantic HTML tags are used to structure the webpage.
 - [ ] The page scores 100 for Accessibility in the Lighthouse audit.
 - [ ] The page header includes a title and description.
-- [ ] The articles section has three unique articles, each including a title, summary, and a link.
+- [ ] The articles section has three unique articles, each including an image, title, summary, and a link.
 - [ ] The page footer is fixed to the bottom of the viewport.
 - [ ] The webpage is styled using a linked .css file.
 - [ ] The webpage is properly committed and pushed to a branch on GitHub.