Fixing more typos in various comments

src/ImageSharp/Memory/Buffer2DExtensions.cs

@@ -70,7 +70,7 @@ namespace SixLabors.ImageSharp.Memory
         /// </summary>
         /// <typeparam name="T">The element type</typeparam>
         /// <param name="buffer">The <see cref="IBuffer2D{T}"/></param>
-        /// <param name="rectangle">The rectangel subarea</param>
+        /// <param name="rectangle">The rectangle subarea</param>
         /// <returns>The <see cref="BufferArea{T}"/></returns>
         public static BufferArea<T> GetArea<T>(this IBuffer2D<T> buffer, Rectangle rectangle)
             where T : struct => new BufferArea<T>(buffer, rectangle);

src/ImageSharp/Processing/Processors/Transforms/ResamplingWeightedProcessor.Weights.cs

@@ -153,7 +153,7 @@ namespace SixLabors.ImageSharp.Processing.Processors
         }
 
         /// <summary>
-        /// Holds the <see cref="WeightsWindow"/> values in an optimized contigous memory region.
+        /// Holds the <see cref="WeightsWindow"/> values in an optimized contiguous memory region.
         /// </summary>
         internal class WeightsBuffer : IDisposable
         {

src/ImageSharp/Processing/Processors/Transforms/ResizeProcessor.cs

@@ -58,9 +58,9 @@ namespace SixLabors.ImageSharp.Processing.Processors
             // We will always be creating the clone even for mutate because thats the way this base processor works
             // ------------
             // For resize we know we are going to populate every pixel with fresh data and we want a different target size so
-            // let's manually clone an empty set of images at the correct target and then have the base class processs them in turn.
+            // let's manually clone an empty set of images at the correct target and then have the base class process them in turn.
             IEnumerable<ImageFrame<TPixel>> frames = source.Frames.Select(x => new ImageFrame<TPixel>(this.Width, this.Height, x.MetaData.Clone())); // this will create places holders
-            var image = new Image<TPixel>(config, source.MetaData.Clone(), frames); // base the place holder images in to prevet a extra frame being added
+            var image = new Image<TPixel>(config, source.MetaData.Clone(), frames); // base the place holder images in to prevent a extra frame being added
 
             return image;
         }