Fix JSON URL (#261)

you had "esrle" instead of "earle" in the GH URL :)

package.json

 {
     "name": "framework-arduinopico",
     "description": "Arduino Wiring-based Framework (RPi Pico RP2040)",
-    "url": "https://github.com/esrlephilhower/arduino-pico",
+    "url": "https://github.com/earlephilhower/arduino-pico",
     "version": "0.9.2"
 }