Documentation: add --maxWidth description (#1554)

Author: joostas

docs/articles/guides/console-args.md

@@ -210,4 +210,5 @@ dotnet run -c Release -- --filter * --runtimes netcoreapp2.0 netcoreapp2.1 --sta
 * `--version` Display version information.
 * `--keepFiles` Determines if all auto-generated files should be kept or removed after running the benchmarks.
 * `--noOverwrite` Determines if the exported result files should not be overwritten.
-* `--disableLogFile` Disables the logfile.
+* `--disableLogFile` Disables the logfile.
+* `--maxWidth` Max paramter column width, the default is 20.