message: Fix documentation reference to placement properties to match actual GeometricElement 2d/3d classes
diff: @@ -69,7 +69,12 @@ double ZHigh; // The high Z coordinate of the bounding box
  ### iModel_placement
  An object that contains an origin and rotation angles, plus a bounding box.
  -You can obtain an element's placement by selecting the placement column of the ElementGeom table.
  +You can obtain an element's placement by selecting the placement properties of Geometric Elements.
  +|Class|Properties|
  +|-----|----------|
  +|[GeometricElement2d](../bis/domains/biscore.ecschema/#geometricelement2d)| Origin, BBoxLow, BBoxHigh, Rotation|
  +|[GeometricElement3d](../bis/domains/biscore.ecschema/#geometricelement3d)| Origin, BBoxLow, BBOxHigh, Yaw, Pitch, Roll|
  +
  @see [iModel_placement_origin](#imodel_placement_origin), [iModel_placement_angles](#imodel_placement_angles), [iModel_placement_eabb](#imodel_placement_eabb), [iModel_placement_aabb](#imodel_placement_aabb)
  ```C++
  