Miscelaneous improvements

nanoFramework.System.Net.Http/Http/HttpMessageInvoker.cs

@@ -28,7 +28,7 @@ public HttpMessageInvoker(HttpMessageHandler handler)
         /// Initializes an instance of a <see cref="HttpMessageInvoker"/> class with a specific <see cref="HttpMessageHandler"/>.
         /// </summary>
         /// <param name="handler">The <see cref="HttpMessageHandler"/> responsible for processing the HTTP response messages.</param>
-        /// <param name="disposeHandler"><see langword="true"/> if the inner handler should be disposed of by <see cref="Dispose"/>, <see langword="false"/> if you intend to reuse the inner handler.</param>
+        /// <param name="disposeHandler"><see langword="true"/> if the inner handler should be disposed of by <see cref="HttpMessageInvoker.Dispose"/>, <see langword="false"/> if you intend to reuse the inner handler.</param>
         /// <exception cref="ArgumentNullException"></exception>
         public HttpMessageInvoker(
             HttpMessageHandler handler,

nanoFramework.System.Net.Http/Http/System.Net.HttpWebRequest.cs

@@ -404,7 +404,7 @@ public SslProtocols SslProtocols
         /// times out.  The default value is 300,000 milliseconds (5 minutes).
         /// </value>
         /// <remarks>This property is used to control the timeout when calling
-        /// <see cref="Stream.Read"/> and <see cref="Stream.Write"/>.
+        /// <see cref="Stream.Read(byte[], int, int)"/> and <see cref="Stream.Write"/>.
         /// This property affects <itemref>Stream</itemref>s returned from
         /// GetResponse().<see cref="WebResponse.GetResponseStream"/>()
         /// and

nanoFramework.System.Net.Http/Http/System.Net._InputNetworkStreamWrapper.cs

@@ -748,7 +748,7 @@ private Chunk GetChunk()
 
         public override int Read(SpanByte buffer)
         {
-            throw new NotImplementedException();
+            throw new NotSupportedException();
         }
 
         private enum ChunkState

nanoFramework.System.Net.Http/Http/System.Net._OutputNetworkStreamWrapper.cs

@@ -290,7 +290,7 @@ public override void Write(byte[] buffer, int offset, int size)
 
         public override int Read(SpanByte buffer)
         {
-            throw new NotImplementedException();
+            throw new NotSupportedException();
         }
     }
 }