[editor] Fix translations for math field and area

projects/editor/src/app/components/new-ui-element-panel/ui-element-toolbox.component.html

@@ -69,12 +69,12 @@
             <button *ngIf="hoverFormulaButton" mat-raised-button (click)="addUIElement('math-field')"
                     draggable="true" (dragstart)="startDrag($event,'math-field')"
                     (dragend)="endDrag()">
-              {{'toolbox.math-field' | translate }}
+              {{'toolbox.field' | translate }}
             </button>
             <button *ngIf="hoverFormulaButton" mat-raised-button (click)="addUIElement('text-area-math')"
                     draggable="true" (dragstart)="startDrag($event,'text-area-math')"
                     (dragend)="endDrag()">
-              {{'toolbox.math-area' | translate }}
+              {{'toolbox.area' | translate }}
             </button>
           </div>
           <button mat-stroked-button (click)="addUIElement('math-table')"

projects/editor/src/assets/i18n/de.json

@@ -340,8 +340,10 @@
     "geometry": "Geometrie",
     "hotspot-image": "Bildbereiche",
     "formula": "Formel",
-    "math-field": "Feld",
-    "math-area": "Bereich",
+    "math-field": "Formelfeld",
+    "field": "Feld",
+    "area": "Bereich",
+    "text-area-math": "Formelbereich",
     "math-table": "Rechenkästchen",
     "trigger": "Auslöser"
   },