Don't use role=button in anchor tags if it's supposed to be a link

[SaptakS]

role=button should be avoided as much as possible and instead the <button> tag should be used. It doesn't matter if a link aesthetically looks like a button. What really decides whether an interactive element is a button or a link is this:

• Does clicking on it take you to a different page, or a different view, or a different section of the same page? It's a Link
• Does clicking on it open a modal, switch a tab panel, toggle some item, open navigation in smaller screen? Basically it stays in the same page and doesn't go somewhere else. It's a Button

For example in the home page, all the "Learn More" links are given a role=button which is wrong since it goes to a separate page. So it's a link. We should remove all such role=button because it acts just like a <button> tag for assistive technology and confusing for users.

Refs: https://www.youtube.com/watch?v=8XjwDq9zG4I