[Docs]Add AG Grid customisation explanation (#471)

vizro-core/changelog.d/20240510_152923_nadija_ratkusic_graca_vizro_core_aggrid_custom_css.md

@@ -0,0 +1,48 @@
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vizro-core/docs/pages/user-guides/table.md

@@ -176,7 +176,7 @@ to format displayed strings automatically.
 
 As mentioned above, all [parameters of the Dash AG Grid](https://dash.plotly.com/dash-ag-grid/reference) can be entered as keyword arguments. Below you can find
 an example of a styled AG Grid where some conditional formatting is applied, and where the columns are editable, but not filterable or resizable.
-There are many more ways to alter the grid beyond this showcase.
+There are more ways to alter the grid beyond this showcase. AG Grid, like any other Vizro component, can be customized using custom CSS. You can find information in the [guide to overwriting CSS properties](./assets.md#Overwrite CSS properties in selective components).
 
 ??? example "Styled and modified Dash AG Grid"