doc: Fix the Doxygen section endings

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
diff --git a/include/osmocom/core/crcXXgen.h.tpl b/include/osmocom/core/crcXXgen.h.tpl
index b411276..89d083a 100644
--- a/include/osmocom/core/crcXXgen.h.tpl
+++ b/include/osmocom/core/crcXXgen.h.tpl
@@ -52,7 +52,7 @@
                             const ubit_t *in, int len, ubit_t *crc_bits);
 
 
-/*! }@ */
+/*! @} */
 
 #endif /* __OSMO_CRCXXGEN_H__ */