Misleading documentation in UserStore

[arthuredgarov]

aspnetcore/src/Identity/EntityFrameworkCore/src/UserStore.cs

Line 66 in d520252

/// <typeparam name="TKey">The type of the primary key for a role.</typeparam>

On the line mentioned above, documentation states that generic parameter defines type of the primary key for a role. This is clearly false statement since the TKey is used as generic parameter for user and role entities' primary key.

There are several occurrences of this text in the class documentation (copy-paste artifact), there is no place where this statement is true.