Fixes to footer layout

[edward-ly]

Just discovered this theme and it has to be my new favorite! Although, the footer had two small issues which I was able to fix here:

1. the spacing between the short subtitle and author name was not consistent, and
2. the footer with the nofooterlogo option was not updated to use the same short text layout as the one without.

• Followed the Contributing guide
• Read the PR guide
• Referenced relevant issues, if applicable: (none)
• If necessary, I have updated the documentation.

[welcome]

Thanks for opening this pull request! 💖
Please check out the code of conduct and the contributing guidelines.
Although, you probably have read it already. 😎

[kai-tub]

Hey, thanks for the contribution!

Sorry for the delay 🙏
The CI pipeline + developer environment was quite rusty, and I took this PR as a motivation to make some internal upgrades.

Thanks again!
(The images will be updated shortly)

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉
We are proud of you and your accomplishment 🏆.