Fix: enhanced announcements dot doesn't bounce

The Community Console HTML structure changed, and this caused the styles
to make the announcements dot bounce to stop working.

This change adapts the styles to the new structure so it continues to
work.

Fixed: twpowertools:33
Change-Id: I68748317ff2fe4543f4f324bffeb9780166750a1
diff --git a/src/static/css/enhanced_announcements_dot.css b/src/static/css/enhanced_announcements_dot.css
index 5c23251..3e394ef 100644
--- a/src/static/css/enhanced_announcements_dot.css
+++ b/src/static/css/enhanced_announcements_dot.css
@@ -32,7 +32,7 @@
   animation: .5s infinite alternate ease-in TWPTAnnouncementDot;
 }
 
-header .right-control material-button.has-updates::after {
+header .right-control .help-button.has-updates::after {
   animation: .5s infinite alternate ease-in TWPTAnnouncementDot-v2;
 }