chore(Grid): update breaking changes

Author: ntacheva

upgrade/breaking-changes/7-0-0.md

@@ -44,7 +44,7 @@ The obsolete `ClearButton` parameter is removed. Use `ShowClearButton` instead.
 * The obsolete `AutoFitColumns()` method is removed. Use `AutoFitColumnsAsync()` instead.
 * The obsolete `AutoFitAllColumns()` method is removed. Use `AutoFitAllColumnsAsync()` instead.
 * When using [grouping and `OnRead`]({%slug components/grid/manual-operations%}#grouping-with-onread), casting `DataSourceResult.Data` to a list of objects (`.Cast<object>()`) is no longer needed.
-* [Components in a Grid column `<Template>` require a `@key`]({%slug grid-templates-column%}#using-components-in-grid-column-templates) in order to display correct values after data operations like sorting, filtering, paging, and others.
+* [Components in some Grid templates require a `@key`]({%slug grid-kb-using-components-in-templates%}) in order to display correct values after data operations like sorting, filtering, paging, and others.
 
 >caption Using custom components in Grid column templates up to version 6.2.0 and after version 7.0.0