updates

Author: MarcoRossignoli

src/coverlet.core/Reporters/CoberturaReporter.cs

@@ -39,7 +39,7 @@ public string Report(CoverageResult result)
                 package.Add(new XAttribute("name", Path.GetFileNameWithoutExtension(module.Key)));
                 package.Add(new XAttribute("line-rate", (summary.CalculateLineCoverage(module.Value).Percent / 100).ToString(CultureInfo.InvariantCulture)));
                 package.Add(new XAttribute("branch-rate", (summary.CalculateBranchCoverage(module.Value).Percent / 100).ToString(CultureInfo.InvariantCulture)));
-                package.Add(new XAttribute("complexity", summary.CalculateCyclomaticComplexity(module.Value).ToString(CultureInfo.InvariantCulture)));
+                package.Add(new XAttribute("complexity", summary.CalculateCyclomaticComplexity(module.Value)));
 
                 XElement classes = new XElement("classes");
                 foreach (var document in module.Value)