Add more personal blog posts RSS feeds

[Kerollmops]

Hello and happy holidays,

This PR adds three new blog posts RSS feed links:

• https://journal.valeriansaliou.name
• https://blog.dureuill.net
• https://blog.kerollmops.com

Do not submit your own website unless you submit 2 other sites that are not yours (and are not in list).

As I am adding my personal blog I added also two most my friends blogs.