secure_storage: Revise inappropriate annotations

Revise inappropriate annotations.

Reviewed-by: Joakim Bech <joakim.bech@gmail.com>
Signed-off-by: Hongyou Fu <sduqhy@gmail.com>
diff --git a/secure_storage/ta/user_ta_header_defines.h b/secure_storage/ta/user_ta_header_defines.h
index 6f0445d..0e97a8a 100644
--- a/secure_storage/ta/user_ta_header_defines.h
+++ b/secure_storage/ta/user_ta_header_defines.h
@@ -38,7 +38,7 @@
 
 #define TA_FLAGS			(TA_FLAG_EXEC_DDR | TA_FLAG_SINGLE_INSTANCE)
 
-/* Provisioned heap size for TEE_Malloc() and friends */
+/* Provisioned stack size */
 #define TA_STACK_SIZE			(2 * 1024)
 
 /* Provisioned heap size for TEE_Malloc() and friends */