[material-ui] Blog template has broken image links

[navedqb]

Steps to reproduce

Link to live example: https://mui.com/material-ui/getting-started/templates/blog/

Steps:

1. Go to https://mui.com/material-ui/getting-started/templates/blog/
2. Image is not displayed

Context

Unsplash random API is outdated, so we need to fix the images on blog themplate.

PRs

• Fixes broken images on next branch [material-ui][docs] Fix broken image links in blog template #42956
• Fixes broken images on master branch [material-ui][docs] Fix broken image links in blog template on master branch #42969

Your environment

npx @mui/envinfo

  Don't forget to mention which browser you used.
  Output from `npx @mui/envinfo` goes here.

Search keywords: material-ui, blog