fix: Font.Glyph.get_SVG ( Fixes #18 )

Using bounding box

Author: StartAutomating

Font.types.ps1xml

@@ -80,10 +80,10 @@ $this.d
                         $fontFace = $this.ParentNode.'font-face'
 $descent = $fontFace.descent -as [double]
 $bbox = $fontFace.bbox -split '\s' -as [double[]]
-$viewbox = "0 $($bbox[-3] - $descent) $($bbox[-2]) $($bbox[-1])"
+$viewbox = $bbox
 @(
     "<svg xmlns='http://www.w3.org/2000/svg' viewBox='$viewbox' width='100%' height='100%' transform='scale(1 -1)'>"
-    "<path fill='currentColor' d='$($this.PathData)' />"    
+    "<path fill='currentColor' d='$($this.PathData)'  />"
     "</svg>"
 ) -as [xml]
                     </GetScriptBlock>