nginx "limit_req" suggestion causes a configuration error

If I follow the suggestion to add the "limit_req" to my nginx configuration, it causes a configuration error:
`nginx: [emerg] zero size shared memory zone "one"`

It seems like the configuration shown is incomplete.

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* ID: dcdd2c35-bf2b-2673-d150-303a8aaa54d2
* Version Independent ID: 815fe034-c9fc-aee3-a8b5-f2e860b30302
* Content: [Host ASP.NET Core on Linux with Nginx](https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/linux-nginx?view=aspnetcore-7.0&tabs=linux-ubuntu)
* Content Source: [aspnetcore/host-and-deploy/linux-nginx.md](https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/host-and-deploy/linux-nginx.md)
* Product: **aspnet-core**
* Technology: **aspnetcore-hostdeploy**
* GitHub Login: @Rick-Anderson
* Microsoft Alias: **riande**