doc: Fix the Doxygen section endings

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/src/select.c b/src/select.c
index c0705d3..6b73377 100644
--- a/src/select.c
+++ b/src/select.c
@@ -167,6 +167,6 @@
 	return work;
 }
 
-/*! }@ */
+/*! @} */
 
 #endif /* _HAVE_SYS_SELECT_H */