Update image reference for badges
What does this MR do and why?
The images on the badges docs page are outdated. The project overview page has recently been updated, and badges have moved to the right hand panel. This MR updates the image reference for badges on the project overview page and removes the images for viewing URLs for pipeline badges, as the steps outlined are quite clear.
Related to https://gitlab.com/gitlab-com/gitlab-OKRs/-/issues/7607.
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Edited by Christina Lohr