Fix SSum-Calculation

src/SumRow.svelte

@@ -19,7 +19,7 @@
         ∑ {roundOne(calculateESum(workPackages))}
     </td>
     <td class="tg-0lax">
-        ∑ {roundOne(calculateSSum(workPackages))}
+        {roundOne(calculateSSum(workPackages))}
     </td>
     <td class="tg-0lax">
     </td>

src/estimator.ts

@@ -48,7 +48,7 @@ export function calculateSSum(workPackages: WorkPackage[]): number {
     sumIgnoreNonNumbers(
       workPackages
         .filter(({ a, b }) => typeof a === "number" && typeof b === "number")
-        .map((workPackage) => calculateS(workPackage))
+        .map((workPackage) => calculateS(workPackage) ** 2)
     )
   );
 }