fix kaleidoscope link

Author: SimonCropp

docs/diff-tool.md

@@ -303,7 +303,7 @@ Non-MDI tools are preferred since it allows [DiffEngineTray](tray.md) to track a
     * `%PATH%guiffyCL.command`
     * `/Applications/Guiffy/guiffyCL.command`
 
-### [Kaleidoscope](https://www.kaleidoscopeapp.com/)
+### [Kaleidoscope](https://kaleidoscope.app)
 
   * Cost: Paid
   * Is MDI: False

src/DiffEngine.Tests/diffTools.include.md

@@ -190,7 +190,7 @@ Non-MDI tools are preferred since it allows [DiffEngineTray](tray.md) to track a
     * `%PATH%guiffyCL.command`
     * `/Applications/Guiffy/guiffyCL.command`
 
-### [Kaleidoscope](https://www.kaleidoscopeapp.com/)
+### [Kaleidoscope](https://kaleidoscope.app)
 
   * Cost: Paid
   * Is MDI: False

src/DiffEngine/Implementation/Kaleidoscope.cs

@@ -3,7 +3,7 @@ static partial class Implementation
     public static Definition Kaleidoscope() =>
         new(
             Tool: DiffTool.Kaleidoscope,
-            Url: "https://www.kaleidoscopeapp.com/",
+            Url: "https://kaleidoscope.app",
             AutoRefresh: true,
             IsMdi: false,
             SupportsText: true,