improve comments

src/ImageSharp/Formats/WebP/HTreeGroup.cs

@@ -26,7 +26,7 @@ namespace SixLabors.ImageSharp.Formats.WebP
         }
 
         /// <summary>
-        /// Gets the Huffman trees. This has a maximum of HuffmanCodesPerMetaCode (5) entry's.
+        /// Gets the Huffman trees. This has a maximum of <see cref="WebPConstants.HuffmanCodesPerMetaCode" /> (5) entry's.
         /// </summary>
         public List<HuffmanCode[]> HTrees { get; }
 

src/ImageSharp/Formats/WebP/LosslessUtils.cs

@@ -59,7 +59,7 @@ namespace SixLabors.ImageSharp.Formats.WebP
                     {
                         // We need to load fresh 'packed_pixels' once every
                         // 'pixelsPerByte' increments of x. Fortunately, pixelsPerByte
-                        // is a power of 2, so can just use a mask for that, instead of
+                        // is a power of 2, so we can just use a mask for that, instead of
                         // decrementing a counter.
                         if ((x & countMask) is 0)
                         {

src/ImageSharp/Formats/WebP/WebPMetadata.cs

@@ -38,7 +38,7 @@ namespace SixLabors.ImageSharp.Formats.WebP
         public Queue<WebPChunkType> ChunkTypes { get; set; } = new Queue<WebPChunkType>();
 
         /// <summary>
-        /// Gets or sets a value indicating whether the webp file contains a animation.
+        /// Gets or sets a value indicating whether the webp file contains an animation.
         /// </summary>
         public bool Animated { get; set; } = false;