No mention of loading related data

Setting up the entity class to track the relationship isn’t enough in and many to many relationship and does not implicitly load related data. A mention of loading related data docs at https://docs.microsoft.com/en-us/ef/core/querying/related-data and using .Include() and .ThenInclude() to load the additional data would be helpful.

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#### Document Details

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* ID: 24b2b50e-35f8-9e0b-8ce5-840e1ea816e6
* Version Independent ID: 9e0e6e2c-48fa-76c3-3bd9-813a6df22645
* Content: [Relationships - EF Core](https://docs.microsoft.com/en-us/ef/core/modeling/relationships?tabs=fluent-api%2Cfluent-api-simple-key%2Csimple-key#feedback)
* Content Source: [entity-framework/core/modeling/relationships.md](https://github.com/dotnet/EntityFramework.Docs/blob/master/entity-framework/core/modeling/relationships.md)
* Product: **entity-framework**
* Technology: **entity-framework-core**
* GitHub Login: @AndriySvyryd
* Microsoft Alias: **avickers**