Update learn.json

Author: alesanchezr

learn.json

@@ -4,6 +4,7 @@
     "description": "Create a Todo list API Interactively using Python language and the Flask Framework",
     "repository": "https://github.com/4GeeksAcademy/python-http-requests-api-tutorial-exercises",
     "videoSolutions": false,
+    "preview": "https://storage.googleapis.com/breathecode-asset-images/Screenshot%202023-08-16%20at%202.06.51%20PM.png",
     "projectType": "tutorial",
     "bugsLink": "https://github.com/learnpack/learnpack/issues/new",