feat: Turtle.FontFamily ( Fixes #354, Fixes #377 )

Author: StartAutomating

Types/Turtle/get_FontFamily.ps1

@@ -6,7 +6,7 @@
 
     If no font family has been set, this returns nothing.
 .EXAMPLE
-    turtle fontfamily 12 fontfamily
+    turtle fontfamily sane-serif fontfamily
 .LINK
     https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/font-family
 #>