docs: fix typo in headlines feed page

Author: fulleni

lib/headlines-feed/view/headlines_feed_page.dart

@@ -123,7 +123,8 @@ class _HeadlinesFeedViewState extends State<_HeadlinesFeedView> {
                 subheadline: 'Fetching headlines',
               );
             // this silentcase will never be reached
-            // it here just to fullfill the switch comprehensive check
+            // it here just to fullfill the Exhaustiveness 
+            // Checking os the sealed state.
             case HeadlinesFeedLoadingSilently():
               return const Placeholder();
             case HeadlinesFeedLoaded():

pubspec.yaml

@@ -1,6 +1,6 @@
 name: ht_main
 description: main headlines toolkit mobile app.
-version: 0.27.1
+version: 0.27.2
 publish_to: none
 repository: https://github.com/headlines-toolkit/ht-main
 environment: