modify sublink.tsx, markdown.ts and favicon.icon

lib/markdown.ts

@@ -110,12 +110,12 @@ const handleCodeTitles = () => (tree: Node) => {
           nextElement.properties = {};
         }
         nextElement.properties['data-title'] = titleNode.value;
-        
+
         // Remove the original title div
         parent.children.splice(index, 1);
-        
+
         // Return the same index to continue visiting from the correct position
-        return index; 
+        return index;
       }
     }
   });
@@ -183,7 +183,9 @@ export async function getDocsTocs(slug: string) {
 }
 
 export function getPreviousNext(path: string) {
-  const index = page_routes.findIndex(({ href }) => href == `/${path}`);
+  // path comes in as "getting-started/introduction" but page_routes has "/docs/getting-started/introduction"
+  const fullPath = path ? `/docs/${path}` : "/docs";
+  const index = page_routes.findIndex(({ href }) => href === fullPath);
   return {
     prev: page_routes[index - 1],
     next: page_routes[index + 1],
@@ -241,7 +243,7 @@ const preProcess = () => (tree: Node) => {
     if (element?.type === "element" && element?.tagName === "pre" && element.children) {
       const [codeEl] = element.children as Element[];
       if (codeEl.tagName !== "code" || !codeEl.children?.[0]) return;
-      
+
       const textNode = codeEl.children[0] as TextNode;
       if (textNode.type === 'text' && textNode.value) {
         element.raw = textNode.value;