Fix HTML Validation Errors

[jhancock532]

I've ran the website pages through https://validator.w3.org/nu/ and made changes for issues that were being raised.

• The navigation role isn't needed on a nav element
• The Internet Explorer compatible metadata tag should only include IE

The Next.js image components were repeatedly causing errors, this doesn't have an easy fix as its baked into how these components work.

A warning was raised with the use of an aria label for the jobs badge. I'd like to refactor this as a screenreader only text element instead, but I'm not sure if this is necessary.

How to Test

You can test the preview site by putting this URL into the Nu HTML validator

Screenshots

Expand to show more

MR Checklist

• [x] Add a description of your pull request and instructions for the reviewer to verify your work.
• [x] If your pull request is for a specific ticket, link to it in the description.
• [x] Stay on point and keep it small so the merge request can be easily reviewed.
• [x] Consider adding unit tests, especially for bug fixes. If you don't, tell us why.
• [x] Tests and linting passes.
• [x] Consider updating documentation. If you don't, tell us why.
• [x] If relevant, list the environments / browsers in which you tested your changes.