Fixing opening help by keyword

(broken by Script commands and .NET assembly classes and methods in generated code link to online documentation)

Source commit: f8be0f32848038c1bb4123b0b105b4b7ff8cf667

source/windows/WinHelp.cpp

@@ -105,6 +105,6 @@ void __fastcall TWebHelpSystem::ShowHelp(const UnicodeString AHelpString)
   }
   else
   {
-    ShowHelp(AHelpString);
+    ::ShowHelp(AHelpString);
   }
 }