fix: adds missing cancellation parameter to async method

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

src/Microsoft.OpenApi/Models/OpenApiDocument.cs

@@ -545,10 +545,11 @@ public static ReadResult Load(MemoryStream stream,
         /// </summary>
         /// <param name="url"> The path to the OpenAPI file.</param>
         /// <param name="settings">The OpenApi reader settings.</param>
+        /// <param name="token">The cancellation token</param>
         /// <returns></returns>
-        public static async Task<ReadResult> LoadAsync(string url, OpenApiReaderSettings? settings = null)
+        public static async Task<ReadResult> LoadAsync(string url, OpenApiReaderSettings? settings = null, CancellationToken token = default)
         {
-            return await OpenApiModelFactory.LoadAsync(url, settings);
+            return await OpenApiModelFactory.LoadAsync(url, settings, token).ConfigureAwait(false);
         }
 
         /// <summary>

src/Microsoft.OpenApi/Reader/OpenApiModelFactory.cs

@@ -76,7 +76,7 @@ public static T Load<T>(MemoryStream input, OpenApiSpecVersion version, string f
         /// </summary>
         /// <param name="url">The path to the OpenAPI file</param>
         /// <param name="settings"> The OpenApi reader settings.</param>
-        /// <param name="token"></param>
+        /// <param name="token">The cancellation token</param>
         /// <returns></returns>
         public static async Task<ReadResult> LoadAsync(string url, OpenApiReaderSettings settings = null, CancellationToken token = default)
         {