Wiki page have some bugs

[lkbhitesh07]

Describe the bug
The view of the wiki page is broken. The HTML tags are visible rather than the sentence also the image is also giving a 404 error. Also, the resources which are provided are repeating also all the links are broken and pointing to just the home of the Github repo.

To Reproduce
Steps to reproduce the behavior:

1. We just have to simply modify the wiki page on GitHub.

Expected behavior
The page should not contain HTML tags and the image should be visible.

Screenshots

Desktop (please complete the following information):

• OS: Ubuntu 18.04
• Browser: Chrome

Additional context
@hardlyhuman I would like to fix it, also will you please give some details on the image that has to be there.
Thanks