doc: Fix the Doxygen section endings

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/include/osmocom/vty/command.h b/include/osmocom/vty/command.h
index 79d0aec..664c83c 100644
--- a/include/osmocom/vty/command.h
+++ b/include/osmocom/vty/command.h
@@ -366,5 +366,5 @@
 
 extern void *tall_vty_cmd_ctx;
 
-/*! }@ */
+/*! @} */
 #endif				/* _ZEBRA_COMMAND_H */
diff --git a/include/osmocom/vty/telnet_interface.h b/include/osmocom/vty/telnet_interface.h
index 65a1dd9..3c22201 100644
--- a/include/osmocom/vty/telnet_interface.h
+++ b/include/osmocom/vty/telnet_interface.h
@@ -51,6 +51,6 @@
 
 void telnet_exit(void);
 
-/*! }@ */
+/*! @} */
 
 #endif /* TELNET_INTERFACE_H */
diff --git a/include/osmocom/vty/vty.h b/include/osmocom/vty/vty.h
index 83506c5..1518894 100644
--- a/include/osmocom/vty/vty.h
+++ b/include/osmocom/vty/vty.h
@@ -183,6 +183,6 @@
 extern struct cmd_element cfg_description_cmd;
 extern struct cmd_element cfg_no_description_cmd;
 
-/*! }@ */
+/*! @} */
 
 #endif