Update API docs to conform with doc standards

[AbandonedRickshaw]

It's just a generated stub, with no references to methods, properties, etc.

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Document Details

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• ID: 1004d955-1180-5aed-be4c-a071c060a745
• Version Independent ID: 8f897a0e-b4fa-5d5e-009f-9fdc91793473
• Content: DbContext.Database Property (Microsoft.EntityFrameworkCore)
• Content Source: dotnet/xml/Microsoft.EntityFrameworkCore/DbContext.xml
• Product: entity-framework-core
• GitHub Login: @dotnet-bot
• Microsoft Alias: divega

[roji]

This property has already been documented for 5.0 (along with many others), but the updated docs will only be visible when 5.0 is released.

[smitpatel]

Missing value tags in XML docs.

[roji]

We hardly have value tags anywhere in our docs (seems like 12 occurrences in the core project, I've personally never understood why those are needed in addition to the summary). If we think it's important, maybe open a separate issue for a larger effort?

[smitpatel]

We discussed this issue in triage briefly and determined that we should do something to avoid empty "Property Value" on the doc page. Adding value tag resolves that. The task item in triage was to figure out API docs guidelines from docs team, which I sent in an email. We will discuss this in next meeting.