Everywhere: Use Core::ConfigFile::AllowWriting::Yes to allow writing

Author: https://github.com/networkException
Commit: 938051feb8
Pull-request: https://github.com/SerenityOS/serenity/pull/9501
Reviewed-by: https://github.com/awesomekling

Userland/Games/Chess/main.cpp

@@ -26,7 +26,7 @@ int main(int argc, char** argv)
     auto window = GUI::Window::construct();
     auto& widget = window->set_main_widget<ChessWidget>();
 
-    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Chess");
+    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Chess", Core::ConfigFile::AllowWriting::Yes);
 
     if (pledge("stdio rpath wpath cpath recvfd sendfd thread proc exec", nullptr) < 0) {
         perror("pledge");