Align multi-proxy sample region names with docs ordering

Rename multi-proxy sample regions to MultipleProxiesPattern1/2/3 and
update doc snippet anchors so the documented pattern order matches the
sample region naming.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: AArnott

docfx/docs/proxies.md

@@ -26,15 +26,15 @@ When you need multiple client proxies over one connection, use one of these patt
 
 1. Create one proxy that implements multiple interfaces at once.
 
-   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesOption3)]
+   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesPattern1)]
 
 1. Create the <xref:StreamJsonRpc.JsonRpc> connection first, then call instance `Attach<T>` for each proxy.
 
-   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesOption2)]
+   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesPattern2)]
 
 1. Create the first proxy with the static `Attach<T>` method, then get its <xref:StreamJsonRpc.JsonRpc> instance through <xref:StreamJsonRpc.IJsonRpcClientProxy> and create additional proxies with instance `Attach<T>` calls.
 
-   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesOption1)]
+   [!code-csharp[](../../samples/Proxies.cs#MultipleProxiesPattern3)]
 
 ## Proxy traits
 

samples/Proxies.cs

@@ -37,7 +37,7 @@ internal partial interface IAdvancedCalculator
 
         static async Task MultipleProxiesOption1(Stream rpcStream)
         {
-            #region MultipleProxiesOption1
+            #region MultipleProxiesPattern3
             ICalculator calculator = JsonRpc.Attach<ICalculator>(rpcStream);
             JsonRpc rpc = ((IJsonRpcClientProxy)calculator).JsonRpc;
             IAdvancedCalculator advancedCalculator = rpc.Attach<IAdvancedCalculator>();
@@ -52,7 +52,7 @@ static async Task MultipleProxiesOption1(Stream rpcStream)
 
         static async Task MultipleProxiesOption2(Stream rpcStream)
         {
-            #region MultipleProxiesOption2
+            #region MultipleProxiesPattern2
             using JsonRpc rpc = JsonRpc.Attach(rpcStream);
             ICalculator calculator = rpc.Attach<ICalculator>();
             IAdvancedCalculator advancedCalculator = rpc.Attach<IAdvancedCalculator>();
@@ -67,7 +67,7 @@ static async Task MultipleProxiesOption2(Stream rpcStream)
 
         static async Task MultipleProxiesOption3(Stream rpcStream)
         {
-            #region MultipleProxiesOption3
+            #region MultipleProxiesPattern1
             using JsonRpc rpc = JsonRpc.Attach(rpcStream);
             object combinedProxy = rpc.Attach([typeof(ICalculator), typeof(IAdvancedCalculator)], options: null);
             ICalculator calculator = (ICalculator)combinedProxy;