Update README.md

Author: zsmb13

README.md

@@ -1,5 +1,5 @@
 # RainbowCake documentation
 
-This is the repository backing the RainbowCake documentation found on [rainbowcake.dev](https://rainbowcake.dev/). The site is built using [Hugo](https://gohugo.io/).
+This is the repository backing the RainbowCake documentation found on [rainbowcake.github.io](https://rainbowcake.github.io/). The site is built using [Hugo](https://gohugo.io/).
 
 To run the site locally, install Hugo, and run `hugo serve`.