Update Demo 281 & Demo 293 to resolve ADT warnings (#431)

Author: francisco-milan

src/z2ui5_cl_demo_app_281.clas.abap

@@ -77,7 +77,7 @@ CLASS z2ui5_cl_demo_app_281 IMPLEMENTATION.
          )->tile_content( unit = `Unit` footer = `Footer`
            )->feed_content(
                contenttext = `@@notify Great outcome of the Presentation today. The new functionality and the design was well received. Berlin, Tokyo, Rome, Budapest, New York, Munich, London`
-               subheader = `Subheader` value = `9`)->get_parent( )->get_parent( )->get_parent(
+               subheader = `Subheader` value = `9` )->get_parent( )->get_parent( )->get_parent(
        )->generic_tile( class = `sapUiTinyMarginBegin sapUiTinyMarginTop tileLayout` header = `Status Failed - with press event`
            subheader = `Subheader` frametype = `TwoByOne` state = `Failed`  press = client->_event( `press` )
          )->tile_content( unit = `Unit` footer = `Footer`

src/z2ui5_cl_demo_app_293.clas.abap

@@ -100,7 +100,7 @@ CLASS z2ui5_cl_demo_app_293 IMPLEMENTATION.
       WHEN 'CLICK_HINT_ICON'.
         z2ui5_display_popover( `button_hint_id` ).
       WHEN 'handleLinkPress'.
-        client->message_box_display( `Link was clicked! `).
+        client->message_box_display( `Link was clicked!` ).
     ENDCASE.
 
   ENDMETHOD.