fix: Address review

src/Avalonia.Base/Platform/ITextShaperImpl.cs

@@ -13,7 +13,7 @@ namespace Avalonia.Platform
         /// Shapes the specified region within the text and returns a shaped buffer.
         /// </summary>
         /// <param name="text">The text buffer.</param>
-        /// <param name="length">length of text</param>
+        /// <param name="length">The length of text.</param>
         /// <param name="options">Text shaper options to customize the shaping process.</param>
         /// <returns>A shaped glyph run.</returns>
         ShapedBuffer ShapeText(CharacterBufferReference text, int length, TextShaperOptions options);

src/Avalonia.Base/Rendering/DeferredRenderer.cs

@@ -50,7 +50,7 @@ namespace Avalonia.Rendering
         /// <param name="root">The control to render.</param>
         /// <param name="renderLoop">The render loop.</param>
         /// <param name="renderTargetFactory">The target render factory.</param>
-        /// <param name="renderInterface"></param>
+        /// <param name="renderInterface">The Platform Render Context.</param>
         /// <param name="sceneBuilder">The scene builder to use. Optional.</param>
         /// <param name="dispatcher">The dispatcher to use. Optional.</param>
         /// <param name="rendererLock">Lock object used before trying to access render target</param>

src/Skia/Avalonia.Skia/Helpers/ImageSavingHelper.cs

@@ -34,7 +34,7 @@ namespace Avalonia.Skia.Helpers
         /// Save Skia image to a stream.
         /// </summary>
         /// <param name="image">Image to save</param>
-        /// <param name="stream">The where write image.</param>
+        /// <param name="stream">The output stream to save the image.</param>
         /// <param name="quality">
         /// The optional quality for PNG compression. 
         /// The quality value is interpreted from 0 - 100. If quality is null