#859 Add missing comment.

Sources/Operators/GlobalVariationalOperator/Advanced/LocalOperatorTupleItem.hpp

@@ -102,6 +102,7 @@ namespace MoReFEM
                  *
                  * Used only when the list of \a LocalVariationalOperator is actually generated.
                  *
+                 * \param[in] ptr Value set.
                  */
                 void SetLocalOperator(LocalVariationalOperatorPtrT&& ptr) noexcept;