feat: Turtle.TerDragonCurve ( Fixes #36 )

Adding docs

Author: StartAutomating

Turtle.types.ps1xml

@@ -197,6 +197,12 @@ return $this
         <Script>
 
 &lt;#
+.SYNOPSIS
+    Generates a Terdragon Curve.
+.DESCRIPTION
+    Generates a Terdragon curve using turtle graphics.
+.LINK
+    https://en.wikipedia.org/wiki/Dragon_curve#Terdragon
 .EXAMPLE
     $turtle.TerdragonCurve().Pattern.Save("$pwd/TerdragonCurve.svg")
 .EXAMPLE