On the page https://docs.microsoft.com/en-us/odata/webapi/first-odata-api (md file: https://github.com/MicrosoftDocs/OData-docs/blob/main/Odata-docs/webapi/first-odata-api.md), The section titled Register OData has these lines of code:
// requires using Microsoft.AspNet.OData.Extensions;
services.AddOData();
The using statement looks like it should be Microsoft.AspNetCore.OData.Extensions instead, and there is no extension method for IServiceCollection called AddOData().
I'm running a newly-created .NET 6 web API following the Todo example linked in the doc page, and I installed Microsoft.AspNetCore.OData version 8.0.11.