Code example misses iEnumerable

[Tanarri]

Describe the bug Displayed C# code doesn't work

To Reproduce Go to the wiki and look at source code C# "Example 1" https://github.com/commandlineparser/commandline/wiki/HelpText-Configuration

Additional context The the code "Example 1" following code is wrong:

static void DisplayHelp<T>(ParserResult<T> result)

It should be

static void DisplayHelp<T>(ParserResult<T> result,IEnumerable< Error> errs)