Update RSpotify logo in the "About" page to the new one

[marioortizmanero]

Depends on ramsayleung/rspotify#323

By the way, @ramsayleung, I've just noticed that you seem to have two blogs:

• https://ramsayleung.github.io/
• https://0x709394.me/

I had featured the second one in my blog, but since the first one seems to be more active I'm not sure which one I should point to. Which one do you prefer?

[ramsayleung]

The first one :)

The first one is generated by Hugo and Emacs org-mode, I feel comfortable with these tools. The second one is built on Rust, it's my first Rust project, and it takes time to maintain, so I choose to simply switch back to GitHub static page