chore: use file-scoped namespace

src/Shared/HandyControl_Shared/Expression/Drawing/PathSegmentData.cs

@@ -1,17 +1,16 @@
 using System.Windows;
 
-namespace HandyControl.Expression.Drawing
+namespace HandyControl.Expression.Drawing;
+
+internal sealed class PathSegmentData
 {
-    internal sealed class PathSegmentData
+    public PathSegmentData(Point startPoint, System.Windows.Media.PathSegment pathSegment)
     {
-        public PathSegmentData(Point startPoint, System.Windows.Media.PathSegment pathSegment)
-        {
-            PathSegment = pathSegment;
-            StartPoint = startPoint;
-        }
-
-        public System.Windows.Media.PathSegment PathSegment { get; }
-
-        public Point StartPoint { get; }
+        PathSegment = pathSegment;
+        StartPoint = startPoint;
     }
-}
+
+    public System.Windows.Media.PathSegment PathSegment { get; }
+
+    public Point StartPoint { get; }
+}