fix: remove the duplicated sidebar macro (#37639)

Author: yin1999

files/en-us/web/svg/element/index.md

@@ -237,5 +237,3 @@ SVG drawings and images are created using a wide array of elements which are ded
 - [SVG attribute reference](/en-US/docs/Web/SVG/Attribute)
 - [SVG Tutorial](/en-US/docs/Web/SVG/Tutorial)
 - [SVG interface reference](/en-US/docs/Web/API/Document_Object_Model#svg_dom)
-
-{{SVGRef}}