add some missing xml docs

Author: kMutagene

src/Plotly.NET/Layout/ObjectAbstractions/Common/LinearAxis.fs

@@ -828,6 +828,8 @@ type LinearAxis() =
     /// <param name="StartLine">Determines whether or not a line is drawn at along the starting value of this axis. If "true", the start line is drawn on top of the grid lines.</param>
     /// <param name="StartLineColor">Sets the line color of the start line.</param>
     /// <param name="StartLineWidth">Sets the width (in px) of the start line.</param>
+    /// <param name="BackgroundColor">Sets the background color of the axis.</param>
+    /// <param name="ShowBackground">Wether or not to show the background of the axis.</param>
 
     static member style
         (

src/Plotly.NET/Layout/ObjectAbstractions/Ternary/Ternary.fs

@@ -16,6 +16,7 @@ type Ternary() =
     /// <param name="CAxis">Sets the ternary C Axis</param>
     /// <param name="Domain">Sets the ternary domain</param>
     /// <param name="Sum">The number each triplet should sum to, and the maximum range of each axis</param>
+    /// <param name="BGColor">Sets the background color of the ternary layout.</param>
     static member init
         (
             [<Optional; DefaultParameterValue(null)>] ?AAxis: LinearAxis,
@@ -43,6 +44,7 @@ type Ternary() =
     /// <param name="CAxis">Sets the ternary C Axis</param>
     /// <param name="Domain">Sets the ternary domain</param>
     /// <param name="Sum">The number each triplet should sum to, and the maximum range of each axis</param>
+    /// <param name="BGColor">Sets the background color of the ternary layout.</param>
     static member style
         (
             [<Optional; DefaultParameterValue(null)>] ?AAxis: LinearAxis,