Fix metric attribute error in built-in-metrics-aspnetcore.md (#42666)

Author: makazeu

docs/core/diagnostics/built-in-metrics-aspnetcore.md

@@ -288,7 +288,7 @@ Available starting in: .NET 8.0.
 | Attribute  | Type | Description  | Examples  | Presence |
 |---|---|---|---|---|
 | `network.transport` | string | [OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://en.wikipedia.org/wiki/Inter-process_communication). | `tcp`; `unix` | Always |
-| `network.transport` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
+| `network.type` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
 | `server.address` | string | Server address domain name if available without reverse DNS lookup;  otherwise, IP address or Unix domain socket name. | `example.com` | Always |
 | `server.port` | int | Server port number | `80`; `8080`; `443` | If the transport is `tcp` or `udp`. |
 
@@ -305,7 +305,7 @@ Available starting in: .NET 8.0.
 | `network.protocol.name` | string | [OSI application layer](https://osi-model.com/application-layer/) or non-OSI equivalent. | `http`; `web_sockets` | Always |
 | `network.protocol.version` | string | Version of the protocol specified in `network.protocol.name`. | `1.1`; `2` | Always |
 | `network.transport` | string | [OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://en.wikipedia.org/wiki/Inter-process_communication). | `tcp`; `unix` | Always |
-| `network.transport` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
+| `network.type` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
 | `server.address` | string | Server address domain name if available without reverse DNS lookup;  otherwise, IP address or Unix domain socket name. | `example.com` | Always |
 | `server.port` | int | Server port number | `80`; `8080`; `443` | If the transport is `tcp` or `udp`. |
 
@@ -320,7 +320,7 @@ Available starting in: .NET 8.0.
 | Attribute  | Type | Description  | Examples  | Presence |
 |---|---|---|---|---|
 | `network.transport` | string | [OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://en.wikipedia.org/wiki/Inter-process_communication). | `tcp`; `unix` | Always |
-| `network.transport` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
+| `network.type` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
 | `server.address` | string | Server address domain name if available without reverse DNS lookup;  otherwise, IP address or Unix domain socket name. | `example.com` | Always |
 | `server.port` | int | Server port number | `80`; `8080`; `443` | If the transport is `tcp` or `udp`. |
 
@@ -338,7 +338,7 @@ Available starting in: .NET 8.0.
 |---|---|---|---|---|
 | `error.type` | string | The full name of exception type. | `System.OperationCanceledException`; `Contoso.MyException` | If an exception was thrown. |
 | `network.transport` | string | [OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://en.wikipedia.org/wiki/Inter-process_communication). | `tcp`; `unix` | Always |
-| `network.transport` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
+| `network.type` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
 | `server.address` | string | Server address domain name if available without reverse DNS lookup;  otherwise, IP address or Unix domain socket name. | `example.com` | Always |
 | `server.port` | int | Server port number | `80`; `8080`; `443` | If the transport is `tcp` or `udp`. |
 | `tls.protocol.version` | string | TLS protocol version. | `1.2`; `1.3` | If the connection is secured with TLS. |
@@ -356,7 +356,7 @@ Available starting in: .NET 8.0.
 | Attribute  | Type | Description  | Examples  | Presence |
 |---|---|---|---|---|
 | `network.transport` | string | [OSI transport layer](https://osi-model.com/transport-layer/) or [inter-process communication method](https://en.wikipedia.org/wiki/Inter-process_communication). | `tcp`; `unix` | Always |
-| `network.transport` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
+| `network.type` | string | [OSI network layer](https://osi-model.com/network-layer/) or non-OSI equivalent. | `ipv4`; `ipv6` | If the transport is `tcp` or `udp`. |
 | `server.address` | string | Server address domain name if available without reverse DNS lookup;  otherwise, IP address or Unix domain socket name. | `example.com` | Always |
 | `server.port` | int | Server port number | `80`; `8080`; `443` | If the transport is `tcp` or `udp`. |