[Update] Ruby on Rails

[edent]

The icon I want to update is:

• Name: Ruby on Rails
• Website: https://rubyonrails.org/
• Link to icon: https://rubyonrails.org/assets/images/favicon.png

[Zaki-Mohd]

I’d like to take this issue. Please assign it to me under hacktoberfest!

[jmb]

The favicon linked is a truncated version of the image from the main logo: https://rubyonrails.org/assets/images/logo.svg

Do we want this or the main image updated in the current style?