[Doc-Enhancement] Adaptive card size limit in outlook

[SubbaReddi]

Hi team, Teams bots has message limits to send adaptive cards. So, if card size is too big, it will throw error. But I understand that there is no card size limit in outlook. So, adding note will be helpful.

Document Details

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• ID: 98b688c1-6a8f-b249-48a9-253e571bc177
• Version Independent ID: 6e703c95-f4ef-9baa-8dc5-801097a8cb8a
• Content: Adaptive Cards in Outlook - Adaptive Cards
• Content Source: AdaptiveCards/getting-started/outlook.md
• Product: adaptive-cards
• GitHub Login: @dclaux
• Microsoft Alias: dclaux