Fix remaining wrong PolylineOptions type args in NotSupportedException messages in AbstractPolylineDecoder

Agent-Logs-Url: https://github.com/petesramek/polyline-algorithm-csharp/sessions/f4994093-4128-4101-b5df-f6a031463712

Co-authored-by: petesramek <2333452+petesramek@users.noreply.github.com>

Author: Copilot

src/PolylineAlgorithm/Abstraction/AbstractPolylineDecoder.cs

@@ -264,7 +264,7 @@ protected virtual void ValidateFormat(ReadOnlyMemory<char> sequence, ILogger? lo
     protected virtual ReadOnlyMemory<char> GetReadOnlyMemory(in TPolyline polyline) {
         throw new NotSupportedException(
             $"Override {nameof(GetReadOnlyMemory)} in a derived class, or provide a " +
-            $"{nameof(PolylineOptions<TPolyline, TCoordinate>)} with a polyline formatter.");
+            $"{nameof(PolylineOptions<TCoordinate, TPolyline>)} with a polyline formatter.");
     }
 
     /// <summary>
@@ -287,6 +287,6 @@ protected virtual ReadOnlyMemory<char> GetReadOnlyMemory(in TPolyline polyline)
     protected virtual TCoordinate CreateCoordinate(double latitude, double longitude) {
         throw new NotSupportedException(
             $"Override {nameof(CreateCoordinate)} in a derived class, or provide a " +
-            $"{nameof(PolylineOptions<TPolyline, TCoordinate>)} with a value formatter.");
+            $"{nameof(PolylineOptions<TCoordinate, TPolyline>)} with a value formatter.");
     }
 }