Update docs for dotnet-counters

Add documentation for `--dsrouter` switch introduced in dotnet/diagnostics#5543

Author: jonathanpeppers

docs/core/diagnostics/dotnet-counters.md

@@ -1,12 +1,12 @@
 ---
 title: dotnet-counters diagnostic tool - .NET CLI
 description: Learn how to install and use the dotnet-counter CLI tool for ad-hoc health monitoring and first-level performance investigation.
-ms.date: 11/17/2020
+ms.date: 08/06/2025
 ms.topic: reference
 ---
 # Investigate performance counters (dotnet-counters)
 
-**This article applies to:** ✔️ `dotnet-counters` version 3.0.47001 and later versions.
+**This article applies to:** ✔️ `dotnet-counters` version 10.0 and later versions.
 
 Counters can be read from applications running .NET 5 or later.
 
@@ -70,7 +70,7 @@ Periodically collect selected counter values and export them into a specified fi
 ### Synopsis
 
 ```dotnetcli
-dotnet-counters collect [-h|--help] [-p|--process-id] [-n|--name] [--diagnostic-port] [--refresh-interval] [--counters <COUNTERS>] [--format] [-o|--output] [-- <command>]
+dotnet-counters collect [-h|--help] [-p|--process-id] [-n|--name] [--diagnostic-port] [--refresh-interval] [--counters <COUNTERS>] [--format] [-o|--output] [--dsrouter <ios|ios-sim|android|android-emu>] [-- <command>]
 ```
 
 ### Options
@@ -230,6 +230,10 @@ dotnet-counters monitor [-h|--help] [-p|--process-id] [-n|--name] [--diagnostic-
 
   A comma-separated list of counters. Counters can be specified `provider_name[:counter_name]`. If the `provider_name` is used without a qualifying list of counters, then all counters from the provider are shown. To discover provider and counter names, use the [dotnet-counters list](#dotnet-counters-list) command. For [EventCounters](event-counters.md), `provider_name` is the name of the EventSource and for [Meters](metrics.md), `provider_name` is the name of the Meter.
 
+- **`--dsrouter {ios|ios-sim|android|android-emu}`**
+
+  Starts [dotnet-dsrouter](dotnet-dsrouter.md) and connects to it. Requires [dotnet-dsrouter](dotnet-dsrouter.md) to be installed. Run `dotnet-dsrouter -h` for more information.
+
  **`-- <command>`**
 
   After the collection configuration parameters, the user can append `--` followed by a command to start a .NET application. `dotnet-counters` will launch a process with the provided command and monitor the requested metrics. This is often useful to collect metrics for the application's startup path and can be used to diagnose or monitor issues that happen early before or shortly after the main entrypoint.

docs/core/diagnostics/dotnet-gcdump.md

@@ -127,7 +127,7 @@ dotnet-gcdump collect [-h|--help] [-p|--process-id <pid>] [-o|--output <gcdump-f
 
   By default, dotnet-gcdump listens at the specified address. You can request dotnet-gcdump to connect instead by appending `,connect` after the address. For example, `--diagnostic-port /foo/tool1.socket,connect` will connect to a .NET runtime process that's listening to the `/foo/tool1.socket` Unix domain socket.
 
-- **`--dsrouter {ios|ios-sim|android|android-emu}**
+- **`--dsrouter {ios|ios-sim|android|android-emu}`**
 
   Starts [dotnet-dsrouter](dotnet-dsrouter.md) and connects to it. Requires [dotnet-dsrouter](dotnet-dsrouter.md) to be installed. Run `dotnet-dsrouter -h` for more information.