add interesting bar chart info (#821)

Co-authored-by: Richard Sill <[email protected]>

Author: fiquick

modules/ROOT/pages/dashboards/visualizations/barchart.adoc

@@ -55,10 +55,15 @@ Select your **Category** for the x-axis and one or multiple **Value**s for the y
 
 You can also select:
 
-* The **Bar arrangement** (grouped or stacked).
-* The **Orientation** (vertical or horizontal).
-* The **Scale** (linear or logarithmic).
-* Whether or not to show the legend of the bar chart.
+* The **Bar arrangement** (grouped or stacked)
+* The **Orientation** (vertical or horizontal)
+* The **Scale** (linear or logarithmic)
+
+And whether or not to show:
+
+* The **Data zoom slider** (auto, show, or hide)
+* The **Legend** of the bar chart (auto, show, or hide)
+* The **Download as PNG** option (show or hide)
 
 [TIP]
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