Update image-colorization-exploration.md

Author: agarnung

_projects/image-colorization-exploration.md

@@ -3,5 +3,5 @@ name: image-colorization-exploration
 tools: [Python, Jupyter Notebook]
 image: https://github.com/agarnung/image-colorization-exploration/blob/main/assets/res2.png?raw=true
 description:  An attempt to colorize my old photos 
-external_url: [https://github.com/agarnung/image-deblurring-exploration](https://github.com/agarnung/image-colorization-exploration)
+external_url: https://github.com/agarnung/image-colorization-exploration
 ---