fix some comments

src/ImageSharp/ApplyProcessors.cs

@@ -1,4 +1,4 @@
-// <copyright file="RotateFlip.cs" company="James Jackson-South">
+// <copyright file="ApplyProcessors.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>

src/ImageSharp/IImageProcessorApplicatorFactory.cs

@@ -1,4 +1,4 @@
-// <copyright file="IImageOperationsProvider.cs" company="James Jackson-South">
+// <copyright file="IImageProcessorApplicatorFactory.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>

src/ImageSharp/Image/ImageExtensions.cs

@@ -1,4 +1,4 @@
-// <copyright file="ImageBase{TPixel}.cs" company="James Jackson-South">
+// <copyright file="ImageExtensions.cs" company="James Jackson-South">
 // Copyright (c) James Jackson-South and contributors.
 // Licensed under the Apache License, Version 2.0.
 // </copyright>

src/ImageSharp/Image/Image{TPixel}.cs

@@ -114,17 +114,12 @@ namespace ImageSharp
         /// <param name="stream">The stream to save the image to.</param>
         /// <param name="encoder">The encoder to save the image with.</param>
         /// <exception cref="System.ArgumentNullException">Thrown if the stream or encoder is null.</exception>
-        /// <returns>
-        /// The <see cref="Image{TPixel}"/>.
-        /// </returns>
-        public Image<TPixel> Save(Stream stream, IImageEncoder encoder)
+        public void Save(Stream stream, IImageEncoder encoder)
         {
             Guard.NotNull(stream, nameof(stream));
             Guard.NotNull(encoder, nameof(encoder));
 
             encoder.Encode(this, stream);
-
-            return this;
         }
 
         /// <summary>