🐛 fix date

src/app/graphs/all-in-one-graph/all-in-one-graph.component.html

@@ -1,4 +1,4 @@
-<h2>Rural attractiveness of regions between 2014 and 2040</h2>
+<h2>Rural attractiveness of regions between 2015 and 2040</h2>
 <div id="plot-place" *ngIf="dataLoaded; else loading">
   <plotly-plot [data]="data" [layout]="layout" [className]="'plotly-plot'" [useResizeHandler]="true"></plotly-plot>
 </div>