Update README.md

Author: colbygk

README.md

@@ -1,5 +1,5 @@
 # ScratchX is no longer supported 
-#### ScratchX is now archived and no longer supported because Adobe Flash has reached end of life. If you're interested in developing extensions for Scratch, please visit the [Scratch-GUI](https://github.com/LLK/scratch-gui) repo as a starting point for building a local version of the Scratch editor. It can be linked to your local version of [Scratch-VM](https://github.com/LLK/scratch-vm), where you can create your own extensions.
+#### ScratchX is now archived and no longer supported because Adobe Flash has reached end of life. If you're interested in developing extensions for Scratch, please visit the [Scratch-GUI](https://github.com/scratchfoundation/scratch-gui) repo as a starting point for building a local version of the Scratch editor. It can be linked to your local version of [Scratch-VM](https://github.com/scratchfoundation/scratch-vm), where you can create your own extensions.
 
 ## ScratchX
 #### Website for experimental Scratch extensions