docs: edje: fill last gaps in edje eo file documentation

src/lib/edje/edje_object.eo

@@ -1719,7 +1719,7 @@ class Edje.Object (Efl.Canvas.Group.Clipped, Efl.File, Efl.Container, Efl.Part,
             [[Get the specific data of the current active input panel.
 
               @since 1.2.0]]
-            return: void;
+            return: void; [[FIXME: void needed here?]]
             keys {
                part: string; [[The part name]]
                data: void_ptr; [[The specific data to be set to the input panel.]]

src/lib/edje/efl_canvas_layout_internal.eo

@@ -4,6 +4,7 @@ interface Efl.Canvas.Layout_Internal ()
    eo_prefix: _edje;
    methods {
       @property real_part @protected {
+         [[Real part property]]
          set {}
          values {
             ed: void_ptr; [[Edje object]]