Wrong overload used in ToString(string format, IFormatProvider formatProvider)

when calling matrix with ToString("F4", cultureInfo) the string "F4" was returned. now calling same overload as vectors do.

Author: tebjan

Source/SharpDX.Mathematics/Matrix.cs

@@ -3179,7 +3179,7 @@ public string ToString(string format, IFormatProvider formatProvider)
             if (format == null)
                 return ToString(formatProvider);
 
-            return string.Format(format, formatProvider, "[M11:{0} M12:{1} M13:{2} M14:{3}] [M21:{4} M22:{5} M23:{6} M24:{7}] [M31:{8} M32:{9} M33:{10} M34:{11}] [M41:{12} M42:{13} M43:{14} M44:{15}]",
+            return string.Format(formatProvider, "[M11:{0} M12:{1} M13:{2} M14:{3}] [M21:{4} M22:{5} M23:{6} M24:{7}] [M31:{8} M32:{9} M33:{10} M34:{11}] [M41:{12} M42:{13} M43:{14} M44:{15}]",
                 M11.ToString(format, formatProvider), M12.ToString(format, formatProvider), M13.ToString(format, formatProvider), M14.ToString(format, formatProvider),
                 M21.ToString(format, formatProvider), M22.ToString(format, formatProvider), M23.ToString(format, formatProvider), M24.ToString(format, formatProvider),
                 M31.ToString(format, formatProvider), M32.ToString(format, formatProvider), M33.ToString(format, formatProvider), M34.ToString(format, formatProvider),