Use the schema to eliminate custom code (#11108)

* use the schema to eliminate custom code

* Update docs/reference_info_json.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* make flake8 happy

* bugfix

* do not overwrite make vars from json

Co-authored-by: Ryan <fauxpark@gmail.com>

lib/python/qmk/constants.py

@@ -26,5 +26,5 @@ ROW_LETTERS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnop'
 LED_INDICATORS = {
     'caps_lock': 'LED_CAPS_LOCK_PIN',
     'num_lock': 'LED_NUM_LOCK_PIN',
-    'scrol_lock': 'LED_SCROLL_LOCK_PIN'
+    'scrol_lock': 'LED_SCROLL_LOCK_PIN',
 }