doc: update `wait.md` (#425).

command/wait.md

@@ -39,4 +39,4 @@ wait 27156
 
 输出当前存在作业号的指令，如下所示：
 
-[jobs](https://wangchujiang.com/linux-command/c/jobs.html)
+[jobs](./jobs.md)

scripts/build.mjs

@@ -217,7 +217,15 @@ const contributorsPath = path.resolve(process.cwd(), 'CONTRIBUTORS.svg');
 }
 
 function markdownToHTML(str) {
-  return create({ markdown: str, document: undefined, 'dark-mode': false });
+  return create({
+    rewrite: (node) => {
+      if (node.type === 'element' && node.properties?.href && /.md/.test(node.properties.href) && !/^(https?:\/\/)/.test(node.properties.href)) {
+        let href = node.properties.href;
+        node.properties.href = href.replace(/([^\.\/\\]+)\.(md|markdown)/gi, '$1.html');
+      }
+    },
+    markdown: str, document: undefined, 'dark-mode': false
+  });
 }
 
 /**