docs: use dark and light logo
MODIFY
README.md
README.md
<p align="center">
- <img alt="Rome's logo depicting an ancient Roman arch with the word Rome to its side" src="assets/PNG/logo_transparent_outlined.png" width="700">
+ <img alt="Rome's logo depicting an ancient Roman arch with the word Rome to its side" src="assets/PNG/logo_transparent.png#gh-light-mode-only" width="700">
+ <img alt="Rome's logo depicting an ancient Roman arch with the word Rome to its side" src="assets/PNG/logo_white_yellow_transparent.png#gh-dark-mode-only" width="700">
</p>

docs: use dark and light logo (#2472)