rtmp-services: Fix missing newline at the end of files

plugins/rtmp-services/service-specific/younow.h

@@ -1,3 +1,3 @@
 #pragma once
 
-extern const char *younow_get_ingest(const char *server, const char *key);
+extern const char *younow_get_ingest(const char *server, const char *key);