Add missing asterisk to doxygen closures

Clarify section names next to closing braces
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
diff --git a/include/mbedtls/hmac_drbg.h b/include/mbedtls/hmac_drbg.h
index 0f1653f..37702b5 100644
--- a/include/mbedtls/hmac_drbg.h
+++ b/include/mbedtls/hmac_drbg.h
@@ -71,7 +71,7 @@
 #define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT    384     /**< Maximum size of (re)seed buffer */
 #endif
 
-/* \} name SECTION: Module settings */
+/** \} name SECTION: Module settings */
 
 #define MBEDTLS_HMAC_DRBG_PR_OFF   0   /**< No prediction resistance       */
 #define MBEDTLS_HMAC_DRBG_PR_ON    1   /**< Prediction resistance enabled  */