chore(Docs): fix broken example (#3396)

Co-authored-by: Tsvetomir Hristov <106250052+Tsvetomir-Hr@users.noreply.github.com>

Author: github-actions[bot]

components/grid/templates/command-column-header.md

@@ -31,10 +31,12 @@ The `HeaderTemplate` of the Grid command column enables you to customize the hea
                 <TelerikSvgIcon Icon="@SvgIcon.Gear" />
                 <strong>Actions</strong>
             </HeaderTemplate>
-            <GridCommandButton Command="Edit" Icon="@SvgIcon.Pencil">Edit</GridCommandButton>
-            <GridCommandButton Command="Save" Icon="@SvgIcon.Save" ShowInEdit="true">Update</GridCommandButton>
-            <GridCommandButton Command="Cancel" Icon="@SvgIcon.Cancel" ShowInEdit="true">Cancel</GridCommandButton>
-            <GridCommandButton Command="Delete" Icon="@SvgIcon.Trash">Delete</GridCommandButton>
+            <Template>
+                <GridCommandButton Command="Edit" Icon="@SvgIcon.Pencil">Edit</GridCommandButton>
+                <GridCommandButton Command="Save" Icon="@SvgIcon.Save" ShowInEdit="true">Update</GridCommandButton>
+                <GridCommandButton Command="Cancel" Icon="@SvgIcon.Cancel" ShowInEdit="true">Cancel</GridCommandButton>
+                <GridCommandButton Command="Delete" Icon="@SvgIcon.Trash">Delete</GridCommandButton>
+            </Template>
         </GridCommandColumn>
     </GridColumns>
 </TelerikGrid>
@@ -75,4 +77,4 @@ The `HeaderTemplate` of the Grid command column enables you to customize the hea
 
 ## See Also
 
-* [Grid Command Column](slug:components/grid/columns/command)
+* [Grid Command Column](slug:components/grid/columns/command)