feat: add typo link

custom.js

@@ -1,3 +1,21 @@
-/**
- * Additional js
- */
+(() => {
+	/**
+	 * @param {HTMLAnchorElement} anchorElement
+	 */
+	function setTypoLink(anchorElement) {
+		const fileName = window.location.pathname
+			.replace(".html", "")
+			.replaceAll("-", "_");
+
+		const gitLink = `https://git.nullndr.com/nullndr/website/src/branch/main/content${fileName}.md`;
+
+		anchorElement.href = gitLink;
+	}
+
+	/**
+	 * @type {HTMLAnchorElement}
+	 */
+	const typoLink = document.getElementById("typo-link");
+
+	if (typoLink) setTypoLink(typoLink);
+})();