Microsoft-graph-docs: Update the throttling limits documentation

[gregory]

The doc claims 4 concurrent requests on Beta endpoint yet we hit it on v1.
It's kinda hard to use the graph api to send outbounds, since this 4 concurrent requests limit force us to upload outbound attachments in series ...

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Document Details

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• ID: 8df32e5f-8ccb-0c93-28d9-02392f9c7256
• Version Independent ID: 4aadd084-fb61-e89b-f63f-3b71622636b7
• Content: Microsoft Graph throttling guidance - Microsoft Graph
• Content Source: concepts/throttling.md
• Product: non-product-specific
• Technology: microsoft-graph
• GitHub Login: @baywet
• Microsoft Alias: MSGraphDocsVteam

[baywet]

Thanks for letting us know! Those limits started applying to the v1.0 endpoint recently, see the blog post
I've authored a pull request #8783, whenever it gets merged it'll close this issue

[gregory]

What's the best place to be aware of the changes happening on production ready endpoints?
it feels like this information was buried on some blog post and I would have never been able to take proactive actions against this production change...

[nozhT]

Are the new limits also applied to the other national clouds (ex: Germany / China), or are they only for the global service?

[baywet]

@nozhT thanks for pointing this out. Edited my PR to include this distinction.