mark up ‘order_id’

1 files changed, 1 insertions, 1 deletions

diff --git a/core/api-merchant.rst b/core/api-merchant.rst
index 34b9ed4b..2a6dfbcc 100644
--- a/core/api-merchant.rst
+++ b/core/api-merchant.rst
@@ -2782,7 +2782,7 @@ The contract terms must have the following structure:
     // Unique, free-form identifier for the proposal.
     // Must be unique within a merchant instance.
     // For merchants that do not store proposals in their DB
-    // before the customer paid for them, the order_id can be used
+    // before the customer paid for them, the ``order_id`` can be used
     // by the frontend to restore a proposal from the information
     // encoded in it (such as a short product identifier and timestamp).
     order_id: string;