filled out missing constructor parameter descriptions

src/app/components/tabels/userstory-inner-table/userstory-inner-table.component.ts

@@ -30,9 +30,9 @@ export class UserstoryInnerTableComponent extends TableComponentBase<
   /**
    * Constructor that establishes the initial backend communication.
    * It also sets the tabel's items according to the "storys" input (needed for the dashboard).
-   * @param backendService 
-   * @param modalService 
-   * @param route 
+   * @param backendService backendService object for backend communication
+   * @param modalService angular modalService to handle modals for the Form popups
+   * @param route route object to extract parameters from
    */
   constructor(
     private backendService: BackendService,