copyright: fix typo: sysmocom s/s.m.f.c./s.f.m.c./ GmbH

Change-Id: Ia0952b3b0ce6871e92fa02a3c6ea69c211a0c04d
diff --git a/src/core/tun.c b/src/core/tun.c
index 33c62d5..8612819 100644
--- a/src/core/tun.c
+++ b/src/core/tun.c
@@ -1,6 +1,6 @@
 
 /* TUN interface functions.
- * (C) 2023 by sysmocom - s.m.f.c. GmbH <info@sysmocom.de>
+ * (C) 2023 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
  * Author: Pau Espin Pedrol <pespin@sysmocom.de>
  *
  * All Rights Reserved