fix: external link icon shouldn't be vertical aligned (#699)

sean

2024-01-16 107d9b8dff59de34a2ebef4b7be942b12f435e3a

 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: " §",