Fix casing discrepancies.

themes/next/components/BlogAround.js

@@ -0,0 +1,24 @@
+import Link from 'next/link'
+
+/**
+ * 上一篇，下一篇文章
+ * @param {prev,next} param0
+ * @returns
+ */
+export default function BlogAround ({ prev, next }) {
+  if (!prev || !next) {
+    return <></>
+  }
+  return <section className='text-gray-800 border-t dark:text-gray-300 flex flex-wrap lg:flex-nowrap lg:space-x-10 justify-between py-2'>
+    {prev && <Link href={`/article/${prev.slug}`} passHref>
+      <a className='text-sm py-3 text-gray-400 hover:underline cursor-pointer'>
+        <i className='mr-1 fas fa-angle-double-left' />{prev.title}
+      </a>
+    </Link>}
+    {next && <Link href={`/article/${next.slug}`} passHref>
+      <a className='text-sm flex py-3 text-gray-400 hover:underline cursor-pointer'>{next.title}
+        <i className='ml-1 my-1 fas -fa-angle-double-right' />
+      </a>
+    </Link>}
+  </section>
+}