ADO.NET grain persistence with Entra auth

### Type of issue

Typo

### Description

https://learn.microsoft.com/en-us/dotnet/orleans/grains/grain-persistence/relational-storage is missing information about how to configure grain storage when using Entra accounts to authenticate to storage.

When using Entra, a fixed connection string doesn't exist, because tokens are used - tokens that periodically expire and need to be recreated.

### Page URL

https://learn.microsoft.com/en-us/dotnet/orleans/grains/grain-persistence/relational-storage

### Content source URL

https://github.com/dotnet/docs/blob/main/docs/orleans/grains/grain-persistence/relational-storage.md

### Document Version Independent Id

3a311967-0163-2594-02a1-7d6863571e14

### Platform Id

c2945b0a-8f26-bd91-78bb-0830e528ab47

### Article author

@IEvangelist

### Metadata

* ID: eb892ec8-fbbc-9d3b-b84a-ed1d870ed3f9
* PlatformId: c2945b0a-8f26-bd91-78bb-0830e528ab47
* Service: **dotnet-orleans**

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