Accessibility issues icon e.g. pdf, word

[bsylwek]

Hello,
I'm getting accessibility errors on all pages with icons and empty alt="" fields across all validators. I've filled out all attachment description fields. Where can I correct this so that these errors don't occur? See the screenshot.

[JLTRY]

@bsylwek Do you think that we can close the issue ? (PR #141 was closed)