Grid documentation updates

Author: GomezIvann

apps/website/screens/components/grid/code/examples/layout.tsx

@@ -7,7 +7,7 @@ const code = `() => {
       <DxcGrid
         gap={{ rowGap: "var(--spacing-gap-s)", columnGap: "var(--spacing-gap-ml)" }}
         templateColumns={["repeat(4, 1fr)"]}
-        templateRows={["40px", "200px", "60px"]}
+        templateRows={["var(--height-xl)", "200px", "var(--height-xxxl)"]}
         templateAreas={[
           "header header header header",
           "sidenav main main main",

apps/website/screens/components/grid/overview/GridOverviewPage.tsx

@@ -92,7 +92,7 @@ const sections = [
           <Link href="/components/flex" passHref legacyBehavior>
             <DxcLink>flex</DxcLink>
           </Link>{" "}
-          component for one-dimensional layouts or stacked components with simpler structures.
+          component instead for one-dimensional layouts or stacked components with simpler structures.
         </DxcBulletedList.Item>
       </DxcBulletedList>
     ),