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/Applications/Terminal/main.cpp

@@ -291,7 +291,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Terminal");
+    RefPtr<Core::ConfigFile> config = Core::ConfigFile::get_for_app("Terminal", Core::ConfigFile::AllowWriting::Yes);
     Core::File::ensure_parent_directories(config->filename());
 
     int ptm_fd;