Fix typos in plugin-factory.h
@@ -8,7 +8,7 @@ static const CLAP_CONSTEXPR char CLAP_PLUGIN_FACTORY_ID[] = "clap.plugin-factory
extern "C" {
#endif
-// Every methods must be thread-safe.
+// Every method must be thread-safe.
// It is very important to be able to scan the plugin as quickly as possible.
//
// If the content of the factory may change due to external events, like the user installed
