Fix trending hashtags being fetched every 36 seconds instead of every hour (#11631)

app/javascript/mastodon/features/getting_started/components/trends.js

@@ -17,7 +17,7 @@ export default class Trends extends ImmutablePureComponent {
 
   componentDidMount () {
     this.props.fetchTrends();
-    this.refreshInterval = setInterval(() => this.props.fetchTrends(), 36000);
+    this.refreshInterval = setInterval(() => this.props.fetchTrends(), 3600000);
   }
 
   componentWillUnmount () {