fix: add missing slug and description fields to Article schema and fix auth header

cms/cms/src/api/article/content-types/article/schema.json

@@ -16,6 +16,14 @@
       "type": "string",
       "required": true
     },
+    "slug": {
+      "type": "uid",
+      "targetField": "title",
+      "required": true
+    },
+    "description": {
+      "type": "text"
+    },
     "content": {
       "type": "richtext"
     },