adjust err

packages/slackbot-proxy/src/views/top.ejs

@@ -7,7 +7,7 @@
   <div>
     <img height="300" width="300" alt="GROWi Bot" src="/images/growi-bot.png" />
   </div>
-  <div style="display:flex; justify-content: space-between; max-width: 500px; margin:30px auto;">
+  <div style="display:flex; justify-content: space-around; max-width: 500px; margin:30px auto;">
     <a href=<%- url %>>
       <img alt="Add to Slack" height="40" width="139" src="https://platform.slack-edge.com/img/add_to_slack.png" srcSet="https://platform.slack-edge.com/img/add_to_slack.png 1x, https://platform.slack-edge.com/img/add_to_slack@2x.png 2x" />
     </a>