Update src/Cli/Microsoft.DotNet.Cli.Utils/BuiltInCommand.cs

Co-authored-by: Jan Jones <jan.jones.cz@gmail.com>

Author: chsienki

src/Cli/Microsoft.DotNet.Cli.Utils/BuiltInCommand.cs

@@ -182,7 +182,7 @@ public ICommand SetCommandArgs(string commandArgs)
         throw new NotImplementedException();
     }
 
-    public ICommand StandardOutputEncoding(Encoding commandArgs)
+    public ICommand StandardOutputEncoding(Encoding encoding)
     {
         throw new NotImplementedException();
     }