docs(table): fix example not correctly changing pages when filtering (#11119)

src/material-examples/table-overview/table-overview-example.ts

@@ -34,6 +34,9 @@ export class TableOverviewExample {
     filterValue = filterValue.trim(); // Remove whitespace
     filterValue = filterValue.toLowerCase(); // Datasource defaults to lowercase matches
     this.dataSource.filter = filterValue;
+    if (this.dataSource.paginator) {
+      this.dataSource.paginator.firstPage();
+    }
   }
 }