Web Accessibility Quiz Question

[Sugamgoel28]

Summary of changes

Related to #374

Added a new web accessibility quiz question on cognitive accessibility.

Question:
"In the context of web accessibility, what does 'cognitive accessibility' refer to?",
Answer: "Ensuring that web content is easy to understand and use for individuals with cognitive disabilities.",
Distractor1: "Making web content more engaging and interactive.",
Distractor2: "Enhancing the creativity and aesthetics of web design.",
Distractor3: "Providing audio descriptions for video content.",

Explanation:
"'Cognitive accessibility' refers to the practice of designing and structuring web content in a way that makes it easy to comprehend and navigate for individuals with cognitive disabilities like dyslexia, attention deficit disorders, or intellectual disabilities.",

Link: "https://www.w3.org/WAI/cognitive/"

Checklist

• I have read and followed the contribution guidelines.
• I have read through the Code of Conduct and agree to abide by the rules.
• This PR is for one of the available issues and is not a PR for an issue already assigned to someone else.
• My PR title has a short descriptive name so the maintainers can get an idea of what the PR is about.
• I have provided a summary of my changes.

[jdwilkin4]

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We look forward to future contributions. 👍