Use double quotes for markdown-it-bracketed-spans

eleventy.config.js

@@ -81,7 +81,7 @@ module.exports = function (eleventyConfig) {
     })
         .use(markdownItAnchor, markdownItAnchorOptions)
         .use(require("markdown-it-attrs"))
-        .use(require('markdown-it-bracketed-spans'));
+        .use(require("markdown-it-bracketed-spans"));
 
     /* This is the part that tells 11ty to swap to our custom config */
     eleventyConfig.setLibrary("md", markdownLibrary);