chore(grid):fixed wrong statement in validation (#705)

Author: xristianstefanov

components/grid/editing/validation.md

@@ -10,7 +10,7 @@ position: 40
 
 # Grid Validation
 
-The Telerik UI for Blazor Grid supports built-in validation that is enabled by default. The Grid passes an `EditContext` as a cascading value to the editable cells. If any validation messages are present, the Grid will render them as [Validation Tooltips]({%slug validation-tools-tooltip%}) on hover of the specific editor. 
+The Telerik UI for Blazor Grid supports built-in validation that is enabled by default. The Grid passes an `EditContext` as a cascading value to the editable cells. When you use [inline]({%slug components/grid/editing/inline%}) or [incell]({%slug components/grid/editing/incell%}) editing, if any validation messages are present, the Grid will render them as [Validation Tooltips]({%slug validation-tools-tooltip%}) on hover of the edited input. 
 
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