Update docs

Signed-off-by: Sergey Shliakhov <husband.sergey@gmail.com>

fix: conflicts

lib/Db/BoardMapper.php

@@ -475,4 +475,20 @@ class BoardMapper extends QBMapper implements IPermissionMapper {
 			return null;
 		});
 	}
+
+    /**
+     * @param $ownerId
+     * @param $newOwnerId
+     * @return void
+     */
+    public function transferOwnership($ownerId, $newOwnerId)
+    {
+        $params = [
+            'owner' => $ownerId,
+            'newOwner' => $newOwnerId
+        ];
+        $sql = "UPDATE `{$this->tableName}` SET `owner` = :newOwner WHERE `owner` = :owner";
+        $stmt = $this->execute($sql, $params);
+        $stmt->closeCursor();
+    }
 }