fix: wikilinks should allow external links (closes #639)

Jacky Zhao

2023-12-19 b44a79eebaf1664512ef5ff4e3246b3a6a416ff4

 quartz/plugins/transformers/gfm.ts

@@ -31,6 +31,11 @@
            rehypeAutolinkHeadings,
            {
              behavior: "append",
              properties: {
                ariaHidden: true,
                tabIndex: -1,
                "data-no-popover": true,
              },
              content: {
                type: "text",
                value: " §",