Fix CI: replace em dash with semicolon in TaskDispatcher comment

Author: hugocornellier

windows/camera_desktop_plugin.cpp

@@ -31,7 +31,7 @@ TaskDispatcher::TaskDispatcher() {
   wc.lpfnWndProc   = &TaskDispatcher::WndProc;
   wc.hInstance     = GetModuleHandle(nullptr);
   wc.lpszClassName = kTaskWndClass;
-  RegisterClassEx(&wc);  // Ignore failure — already-registered is fine.
+  RegisterClassEx(&wc);  // Ignore failure; already-registered is fine.
 
   hwnd_ = CreateWindowEx(0, kTaskWndClass, nullptr, 0,
                          0, 0, 0, 0, HWND_MESSAGE, nullptr,