docs: API documentation fixes
Change-Id: I1088a156c9ac055f974900454647dcb9a7b7ec54
Refs: #3210
diff --git a/src/util/face-uri.hpp b/src/util/face-uri.hpp
index 0e51012..f7cbe41 100644
--- a/src/util/face-uri.hpp
+++ b/src/util/face-uri.hpp
@@ -164,9 +164,10 @@
* \param onSuccess function to call after this FaceUri is converted to canonical form
* \note A new FaceUri in canonical form will be created; this FaceUri is unchanged.
* \param onFailure function to call if this FaceUri cannot be converted to canonical form
- * \param timeout maximum allowable duration of the operations.
- * It's intentional not to provide a default value: the caller should set
- * a reasonable value in balance between network delay and user experience.
+ * \param io reference to `boost::asio::io_service` instance
+ * \param timeout maximum allowable duration of the operations.
+ * It's intentional not to provide a default value: the caller should set
+ * a reasonable value in balance between network delay and user experience.
*/
void
canonize(const CanonizeSuccessCallback& onSuccess,