Reword feature state component to more closely match kubernetes style

site/layouts/shortcodes/feature-state.html

@@ -8,6 +8,6 @@
 {{ errorf "%q is not a valid feature-state, use one of %q" $state $valid_states }}
 {{ else }}
 <div class="feature-state-notice feature-{{ $state }}">
-  <span class="feature-state-name">FEATURE STATE</span> <code>{{ $project }} {{ $for_version }} [{{ $state }}]</code>
+  <span class="feature-state-name">Feature state</span> {{ $state }} since {{ $project }} {{ $for_version }}
 </div>
 {{ end }}