fix link to "arduino from the ground up"

Author: zhakk-harn

db.json

@@ -460,7 +460,7 @@
       "EN"
     ],
     "description": "Learning the basics of arduino, connecting, programming and having fun :)",
-    "url": "https://www.valentindupas.com/courses/arduino/intro",
+    "url": "https://www.valentindupas.com/courses/arduino/1-_Arduino_from_the_ground_up",
     "thumbnail": "https://www.valentindupas.com/courses/arduino/img/uno_plugged_to_pc.png",
     "last_update": "09/11/22",
     "language": "en",
@@ -2276,4 +2276,4 @@
     "language": "en",
     "type": "resource"
   }
-]
+]