Update docs: change 'built in Jekyll' to 'built with Render Engine' (#691)

Author: RamSaiDeep

README.md

@@ -8,7 +8,7 @@ Black Python Devs is an online-first community for Python devlopers who identify
 
 Extending the ecosystem of Python Communities to Black and Colo(u)red Communities around the world.
 
-This repo is the [GitHub Pages](https://pages.github.com/) website, built in Jekyll.
+This repo is the [GitHub Pages](https://pages.github.com/) website, built with Render Engine.
 
 # Contributing to Black Python Devs Projects