fix x-axis label position

src/index.ts

@@ -496,7 +496,7 @@ abstract class ChartwerkPod<T extends Serie, O extends Options> {
       return;
     }
     let yPosition = this.height + this.margin.top + this.margin.bottom - 35;
-    if(this.series.isSeriesAvailable) {
+    if(!this.series.isSeriesAvailable) {
       yPosition += 20;
     }
     this.chartContainer.append('text')