New device template: don't format log as json

Only part of the log is json, so it will be marked as syntax error.

.github/ISSUE_TEMPLATE/new-device.yaml

@@ -28,7 +28,7 @@ body:
         which is output when you attempt to add the device and are presented
         with a list of non-matching devices.
       placeholder: Reports without logs will be immediately closed
-      render: json
+      render: text
     validations:
       required: true
   - type: textarea