Shorten service identifier

The identifier is used to compute the registry path, and should
ideally be kept short and without spaces.
diff --git a/win/winvnc/VNCServerService.cxx b/win/winvnc/VNCServerService.cxx
index 14be6da..0357677 100644
--- a/win/winvnc/VNCServerService.cxx
+++ b/win/winvnc/VNCServerService.cxx
@@ -29,7 +29,7 @@
 using namespace rfb;
 using namespace win32;
 
-const TCHAR* winvnc::VNCServerService::Name = _T("TigerVNC Server");
+const TCHAR* winvnc::VNCServerService::Name = _T("TigerVNC");
 
 VNCServerService::VNCServerService()
   : Service(Name)