docs: update screenshots in the documentation

[rookieCoder9]

Description

The Medium Icon was not showing in the footer. Made some changes and all the icons are showing fine.

Fixes # [1148]

Type of Change:

• Documentation

Code/Quality Assurance Only

• Bug fix (non-breaking change which fixes an issue)
• This change requires a documentation update (software upgrade on readme file)
• New feature (non-breaking change which adds functionality pre-approved by mentors)

How Has This Been Tested?

Checklist:

• [x] My PR follows the style guidelines of this project
• [x] I have performed a self-review of my own code or materials
• [x] I have commented my code or provided relevant documentation, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation

Code/Quality Assurance Only

• [x] My changes generate no new warnings
• [x] My PR currently breaks something (fix or feature that would cause existing functionality to not work as expected)
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been published in downstream modules

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[rookieCoder9]

@isabelcosta @vj-codes I have fixed issue #1148. Kindly review.