Fix density plot error by using correct bandwidth string in BuildPlots.R#2809

AndreyAkinshin merged 1 commit intodotnet:masterdotnet/BenchmarkDotNet:masterfrom

AtomChen0425:fix-typo-in-BuildPlotAtomChen0425/BenchmarkDotNet:fix-typo-in-BuildPlotCopy head branch name to clipboard