Update src/ImageSharp.Drawing/Shapes/PathExtensions.cs

Co-authored-by: Anton Firszov <antonfir@gmail.com>

Author: JimBobSquarePants

src/ImageSharp.Drawing/Shapes/PathExtensions.cs

@@ -124,7 +124,7 @@ public static IPath Scale(this IPath path, float scale)
             => path.Transform(Matrix3x2.CreateScale(scale, RectangleF.Center(path.Bounds)));
 
         /// <summary>
-        /// Calculates the length of the path as though each segment were unrolled into a line.
+        /// Calculates the approximate length of the path as though each segment were unrolled into a line.
         /// </summary>
         /// <param name="path">The path to compute the length for.</param>
         /// <returns>