fix json

Author: mukunku

packages/stacks-docs/_data/banners.json

@@ -30,12 +30,12 @@
       "applies": ".s-banner",
       "description": "Applies danger (red) visual styles."
     },
-        {
+    {
       "class": ".s-banner__featured",
       "applies": ".s-banner",
       "description": "Applies featured (purple) visual styles."
     },
-        {
+    {
       "class": ".s-banner__activity",
       "applies": ".s-banner",
       "description": "Applies activity (pink) visual styles."