made a little progress on grids demo

i mostly have my head wrapped around the problem a lot more, and need to just
let my brain sit

priv/static/js/ts/grids-basic.ts

@@ -103,7 +103,7 @@ grids_request
     let obj_text : string = JSON.stringify(obj, undefined, 4);
 
 
-    let url = '/grids-spend';
+    let url = '/grids-mkdd';
     let req_options  = {method:  'POST',
                         headers: {'content-type': 'application/json'},
                         body:    obj_text};