docs: correct syntax and redirect examples (#480)

Author: chenjiahan

website/docs/en/config/lib/redirect.mdx

@@ -31,11 +31,12 @@ If you don't need these redirects, you can turn it off, and its import path will
 ```ts title="rslib.config.ts"
 export default {
   lib: [
-    // ..
+    {
+      redirect: {
+        style: false, // Turn off the redirect of the style file
+      },
+    },
   ],
-  redirect: {
-    style: false, // Turn off the redirect of the style file
-  },
 };
 ```
 

website/docs/en/config/lib/syntax.mdx

@@ -47,9 +47,10 @@ You can also set the Browserslist query, such as `last 2 versions`, `> 1%`, `nod
 ```ts title="rslib.config.ts"
 export default {
   lib: [
-    // ...
+    {
+      syntax: ['last 2 versions', '> 1%'],
+    },
   ],
-  syntax: ['last 2 versions', '> 1%'],
 };
 ```
 
@@ -60,8 +61,9 @@ You can also mix ECMAScript version and Browserslist query, such as `es2015` and
 ```ts title="rslib.config.ts"
 export default {
   lib: [
-    // ...
+    {
+      syntax: ['es2015', 'node 20'],
+    },
   ],
-  syntax: ['es2015', 'node 20'],
 };
 ```