DOCS-3874: Fix worldState Go example bug (#4240)

Author: JessamyT

static/include/services/apis/generated/motion.md

@@ -100,7 +100,7 @@ worldState, err := referenceframe.NewWorldState(obstacles, transforms)
 moved, err := motionService.Move(context.Background(), motion.MoveReq{
   ComponentName: gripperName,
   Destination: destination,
-  WorldState: WorldState
+  WorldState: worldState
 })
 ```