Fix ci

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Install Adafruit nRF52 core
         run: |
           arduino-cli config init --overwrite
-          arduino-cli config set board_manager.additional_urls https://www.adafruit.com/package_adafruit_index.json
+          arduino-cli config set board_manager.additional_urls https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
           arduino-cli core update-index
           arduino-cli core install adafruit:nrf52
 

docs/BUILD_AND_DEPLOY.md

@@ -47,7 +47,7 @@ If your CLI config does not already include the Adafruit package index, add it f
 ```yaml
 board_manager:
   additional_urls:
-    - https://www.adafruit.com/package_adafruit_index.json
+    - https://adafruit.github.io/arduino-board-index/package_adafruit_index.json
 ```
 
 Then rerun `arduino-cli core update-index`.