Minor edits to Blog page

- Changed content of message when there are no posts
- Changed description
- Add null alt value fro decorative image

blog/index.tsx

@@ -1,5 +1,5 @@
 export const title = "Blog";
-export const description = "Hello, my friend. Stay a while and listen.";
+export const description = "Hello, stranger. Stay a while and listen.";
 
 export default function({ nav }) {
   const sortPosts = (a,b) => {
@@ -15,8 +15,9 @@ export default function({ nav }) {
   if (!nav.menu("/blog/posts")) {
     return (
       <div className="no-posts">
-        <img src="https://static.fosterhangdaan.com/icons/tabler-icons/latest/svg/square-0-filled.svg" className="icon"/>
-        <h2>No posts yet.<br/>Check back later.</h2>
+        <img src="https://static.fosterhangdaan.com/icons/tabler-icons/latest/svg/coffee.svg" className="icon" alt=""/>
+        <h2>No posts yet</h2>
+        <p>Foster is on a coffee break.<br/>Check back later.</p>
       </div>
     );
   }