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/memory_buffer_alloc.h b/include/mbedtls/memory_buffer_alloc.h
index d4737f5..857fa5e 100644
--- a/include/mbedtls/memory_buffer_alloc.h
+++ b/include/mbedtls/memory_buffer_alloc.h
@@ -38,7 +38,7 @@
 #define MBEDTLS_MEMORY_ALIGN_MULTIPLE       4 /**< Align on multiples of this value */
 #endif
 
-/* \} name SECTION: Module settings */
+/** \} name SECTION: Module settings */
 
 #define MBEDTLS_MEMORY_VERIFY_NONE         0
 #define MBEDTLS_MEMORY_VERIFY_ALLOC        (1 << 0)