test(datagrid-web): update screenshot baseline

Author: leonardomendix

packages/pluggableWidgets/datagrid-web/e2e/DataGrid.spec.js-snapshots/dataGridColumnContent-chromium-linux.png

@@ -210,7 +210,7 @@
                     <caption>Item count singular</caption>
                     <description>Must include '%d' to denote number position</description>
                     <translations>
-                        <translation lang="en_US">%d items selected</translation>
+                        <translation lang="en_US">%d item selected</translation>
                     </translations>
                 </property>
                 <property key="selectedCountTemplatePlural" type="textTemplate" required="false">

packages/pluggableWidgets/datagrid-web/e2e/DataGrid.spec.js-snapshots/datagrid-chromium-linux.png

@@ -23,7 +23,7 @@ export class SelectionCounterViewModel {
     }
 
     private get formatSingular(): string {
-        return this.props.selectedCountTemplateSingular?.value || "%d items selected";
+        return this.props.selectedCountTemplateSingular?.value || "%d item selected";
     }
 
     private get formatPlural(): string {