Fix comments

Author: JimBobSquarePants

src/ImageSharp.Drawing/Shapes/Path.cs

@@ -20,7 +20,7 @@ public class Path : IPath, ISimplePath, IPathInternals, IInternalPathOwner
         /// <summary>
         /// Initializes a new instance of the <see cref="Path"/> class.
         /// </summary>
-        /// <param name="points">The collection of points.</param>
+        /// <param name="points">The collection of points; processed as a series of linear line segments.</param>
         public Path(PointF[] points)
             : this(new LinearLineSegment(points))
         {

src/ImageSharp.Drawing/Shapes/Polygon.cs

@@ -14,7 +14,7 @@ public class Polygon : Path
         /// <summary>
         /// Initializes a new instance of the <see cref="Polygon"/> class.
         /// </summary>
-        /// <param name="points">The collection of points.</param>
+        /// <param name="points">The collection of points; processed as a series of linear line segments.</param>
         public Polygon(PointF[] points)
             : this(new LinearLineSegment(points))
         {