fix: dedupe read time

src/app/post/[slug]/page.tsx

@@ -32,7 +32,7 @@ const Page = async({
         { day: "numeric", month: "long", weekday: "long", year: "numeric" },
       )}`}</p>
       <h2 className="text-center">{post.data.summary}</h2>
-      <p className="text-center">{`A ${post.data.readtime} read.`}</p>
+      <p className="text-center">{`A ${post.data.readtime}.`}</p>
       <Rule />
       <Markdown rehypePlugins={[ rehypeRaw ]} remarkPlugins={[ remarkGfm ]}>
         {post.content}