Purge "(s)" from repo articles

[guardrex]

Fixes #36761

Tom, Wade ... I just need one review to get this one in.

This purges "(s)" from the repo, conforming articles to ...

https://learn.microsoft.com/en-us/style-guide/a-z-word-list-term-collections/s/s-es

I checked the changes to make sure that they were correct because there are a handful of cases where "(s)" is appropriate (e.g., a framework error message or code that has a variable named 's' in it).

I didn't find any instances of "(es)" to remove.

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aspnetcore/blazor/security/webassembly/microsoft-entra-id-groups-and-roles-net-5-to-7.md	aspnetcore/blazor/security/webassembly/microsoft-entra-id-groups-and-roles-net-5-to-7
aspnetcore/data/entity-framework-6.md	aspnetcore/data/entity-framework-6
aspnetcore/fundamentals/localization/select-language-culture.md	aspnetcore/fundamentals/localization/select-language-culture
aspnetcore/fundamentals/openapi/aspnetcore-openapi.md	aspnetcore/fundamentals/openapi/aspnetcore-openapi
aspnetcore/fundamentals/openapi/include-metadata.md	aspnetcore/fundamentals/openapi/include-metadata
aspnetcore/fundamentals/servers/kestrel/when-to-use-a-reverse-proxy.md	aspnetcore/fundamentals/servers/kestrel/when-to-use-a-reverse-proxy
aspnetcore/fundamentals/servers/yarp/extensibility.md	aspnetcore/fundamentals/servers/yarp/extensibility
aspnetcore/fundamentals/servers/yarp/header-routing.md	aspnetcore/fundamentals/servers/yarp/header-routing
aspnetcore/fundamentals/servers/yarp/https-tls.md	aspnetcore/fundamentals/servers/yarp/https-tls
aspnetcore/fundamentals/servers/yarp/queryparameter-routing.md	aspnetcore/fundamentals/servers/yarp/queryparameter-routing
aspnetcore/mvc/controllers/filters.md	aspnetcore/mvc/controllers/filters
aspnetcore/razor-pages/filter.md	aspnetcore/razor-pages/filter
aspnetcore/security/authentication/index.md	aspnetcore/security/authentication/index
aspnetcore/signalr/background-services.md	aspnetcore/signalr/background-services

[wadepickett]

Approved. Looks great. I found a couple very minor typos.