Fix ASCII QR codes being diagonally mirrored

The current implementation of ASCIIQRCode has the X and Y coordinates swapped, resulting in a QR code that is mirrored about the main diagonal. I am not sure why the resulting QR code still scans successfully, but for feature parity with the other formats I propose to correct this.

Author: Timwi

QRCoder/ASCIIQRCode.cs

@@ -52,7 +52,7 @@ public string[] GetLineByLineGraphic(int repeatPerModule, string darkColorString
                 var lineBuilder = new StringBuilder();
                 for (var x = 0; x < QrCodeData.ModuleMatrix.Count - quietZonesModifier; x++)
                 {
-                    var module = QrCodeData.ModuleMatrix[x + quietZonesOffset][((y + verticalNumberOfRepeats) / verticalNumberOfRepeats - 1)+quietZonesOffset];
+                    var module = QrCodeData.ModuleMatrix[((y + verticalNumberOfRepeats) / verticalNumberOfRepeats - 1)+quietZonesOffset][x + quietZonesOffset];
                     for (var i = 0; i < repeatPerModule; i++)
                     {
                         lineBuilder.Append(module ? darkColorString : whiteSpaceString);
@@ -75,4 +75,4 @@ public static string GetQRCode(string plainText, int pixelsPerModule, string dar
                 return qrCode.GetGraphic(pixelsPerModule, darkColorString, whiteSpaceString, drawQuietZones, endOfLine);
         }
     }
-}
+}