Remove 'Sse' from AspNetCoreSseServer sample name (#665)

samples/ProtectedMcpServer/Tools/HttpClientExt.cs

@@ -0,0 +1,13 @@
+using System.Text.Json;
+
+namespace ModelContextProtocol;
+
+internal static class HttpClientExt
+{
+    public static async Task<JsonDocument> ReadJsonDocumentAsync(this HttpClient client, string requestUri)
+    {
+        using var response = await client.GetAsync(requestUri);
+        response.EnsureSuccessStatusCode();
+        return await JsonDocument.ParseAsync(await response.Content.ReadAsStreamAsync());
+    }
+}