Change definition of Preplot QC objects

etc/qc/README.md

@@ -171,12 +171,12 @@ Example:
 
 ```javascript
 {
-  _id: [ 5130, 2348 ],
+  _id: [ null, 2348, 5130 ],
   line: 5130,
   point: 2348,
   class: 'V',
   ntba: false,
-  geometry: '0101000020F759000033333333C7BB1C413333333328FD5841',
+  geometry: '{"type":"Point","crs":{"type":"name","properties":{"name":"EPSG:23031"}},"coordinates":[470769.8,6550688.8]}',
   meta: {},
   count: 0
 }