httpListener element documentation missing timeouts child element

### Type of issue

Typo

### Description

As can be seen [in the source code here](https://github.com/microsoft/referencesource/blob/master/System/net/System/Net/Configuration/HttpListenerElement.cs#L43-L46), there should be a `` child element documented. The configuration class corresponding to the xml element [has been documented here](https://learn.microsoft.com/en-us/dotnet/api/system.net.configuration.httplistenertimeoutselement?view=netframework-4.8.1), but no mention of it in the xml configuration documentation.

### Page URL

https://learn.microsoft.com/en-us/dotnet/framework/configure-apps/file-schema/network/httplistener-element-network-settings?source=docs

### Content source URL

https://github.com/dotnet/docs/blob/main/docs/framework/configure-apps/file-schema/network/httplistener-element-network-settings.md

### Document Version Independent Id

c2f748d7-b95b-2464-a085-e17e53f336ed

### Article author

@karelz

### Metadata

* ID: 8a0faa9d-fbcf-0856-099e-f265fdff7284
* Service: **dotnet-framework**
* Sub-service: **networking**

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