updated comments and ran linter on inferDuration

server/model/maintenance.js

@@ -313,9 +313,9 @@ class Maintenance extends BeanModel {
 
     /**
      * Calculate the maintenance duration
-    * @returns {number}
+     * @param {number} customDuration - The custom duration in milliseconds.
+     * @returns {number} The inferred duration in milliseconds.
      */
-
     inferDuration(customDuration) {
         // Check if duration is still in the window. If not, use the duration from the current time to the end of the window
         if (customDuration > 0) {