[Doc Improvement]: Added a note (#13450) (#13476)

* Updated

* Update charts-in-adaptive-cards.md

* Update charts-in-adaptive-cards.md

* Updated

* Update charts-in-adaptive-cards.md

* Update charts-in-adaptive-cards.md

Updated the note.

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Co-authored-by: KirtiJha-MSFT <[email protected]>
Co-authored-by: ChetanSharma-MSFT <[email protected]>

Author: 3 people

msteams-platform/task-modules-and-cards/cards/charts-in-adaptive-cards.md

@@ -21,6 +21,9 @@ You can visually represent data through charts in Adaptive Cards. You can use ch
 * [Stacked horizontal bar chart](https://adaptivecards.microsoft.com/?topic=Chart.HorizontalBar.Stacked)
 * [Vertical bar chart](https://adaptivecards.microsoft.com/?topic=Chart.VerticalBar)
 
+> [!NOTE]
+> Charts in Adaptive Cards are not supported in Developer Portal.
+
 ## Donut chart
 
 You can use the `Chart.Donut` element to add a donut chart in an Adaptive Card.