Update Demo 031, 040-Fix ADT warnings (ABAP Cloud) (#443)

Author: francisco-milan

src/z2ui5_cl_demo_app_031.clas.abap

@@ -84,7 +84,7 @@ CLASS z2ui5_cl_demo_app_031 IMPLEMENTATION.
                         `       <form:SimpleForm editable="true" width="40rem">` && |\n|  &&
                         `       <Label text="Loading time" />` && |\n|  &&
                         `       <Input id="loadingMinSeconds" width="8rem" type="Number" description="seconds" value="` && client->_bind( mv_value ) && `"/>` && |\n|  &&
-                        `       <Button text="BACK" type="Emphasized" press="` && client->_event( 'BACK') && `"/>` && |\n|  &&
+                        `       <Button text="BACK" type="Emphasized" press="` && client->_event( 'BACK' ) && `"/>` && |\n|  &&
                         `       <Link target="_blank" text="Demo" href="https://twitter.com/abap2UI5/status/1645104539387691008"/>` && |\n|  &&
                         `   </form:SimpleForm>  ` && |\n|  &&
                         `   <GenericTile class="sapUiTinyMarginBegin sapUiTinyMarginTop tileLayout" header="Country-Specific Profit Margin"  press="` && client->_event( 'POPUP' ) && `"` && |\n|  &&

src/z2ui5_cl_demo_app_040.clas.abap

@@ -51,7 +51,7 @@ CLASS Z2UI5_CL_DEMO_APP_040 IMPLEMENTATION.
     CASE app-get-event.
 
       WHEN 'LOAD_BC'.
-        client->message_box_display( 'JSBarcode Library loaded').
+        client->message_box_display( 'JSBarcode Library loaded' ).
         mv_load_lib = abap_true.
 
       WHEN 'BACK'.