Fix missing changes.

db/migrations/5.5.13_add_peer_review_tables.php

@@ -18,7 +18,7 @@ class AddPeerReviewTables extends Migration
                  `configuration` MEDIUMTEXT NOT NULL,
                  `review_start` INT(11) NOT NULL,
                  `review_end` INT(11) NOT NULL,
-                 `pairingdate` INT(11) NULL,
+                 `paired_at` INT(11) NULL,
                  `mkdate` INT(11) NOT NULL,
                  `chdate` INT(11) NOT NULL,
                  PRIMARY KEY(`id`),