chore: refine env example and ignore test harness artifacts

Author: thisislvca

.prettierignore

@@ -9,3 +9,7 @@ apps/example/ios/build/
 
 # Package build output
 packages/react-native-device-activity/build/
+
+# iOS test harness generated artifacts
+packages/react-native-device-activity/ios/TestHarness/Pods/
+packages/react-native-device-activity/ios/TestHarness/build/

apps/example/.env.example

@@ -1,4 +1,4 @@
-RNDA_APPLE_TEAM_ID=YOUR_APPLE_TEAM_ID
+RNDA_APPLE_TEAM_ID=YOUR_APPLE_TEAM_ID # Found in https://developer.apple.com/account#MembershipDetailsCard
 RNDA_APP_GROUP=group.your-app-group
 RNDA_IOS_BUNDLE_ID=com.yourcompany.yourapp
 RNDA_ANDROID_PACKAGE=com.yourcompany.yourapp