Fix documentation errors.

lib/services/podcast/podcast_service.dart

@@ -12,6 +12,9 @@ import 'package:anytime/services/settings/settings_service.dart';
 import 'package:anytime/state/episode_state.dart';
 import 'package:podcast_search/podcast_search.dart' as pcast;
 
+/// The [PodcastService] handles interactions around podcasts including searching, fetching
+/// the trending/charts podcasts, loading the podcast RSS feed and anciallary items such as
+/// chapters and transcripts.
 abstract class PodcastService {
   final PodcastApi api;
   final Repository repository;

lib/services/settings/mobile_settings_service.dart

@@ -8,7 +8,7 @@ import 'package:anytime/services/settings/settings_service.dart';
 import 'package:rxdart/rxdart.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
-/// An implementation [SettingService] for mobile devices backed by
+/// An implementation [SettingsService] for mobile devices backed by
 /// shared preferences.
 class MobileSettingsService extends SettingsService {
   static late SharedPreferences _sharedPreferences;

lib/ui/podcast/funding_menu.dart

@@ -17,8 +17,8 @@ import 'package:url_launcher/url_launcher.dart';
 
 /// This class is responsible for rendering the funding menu on the podcast details page.
 ///
-/// It returns either a [_MaterialPodcastMenu] or a [_CupertinoContextMenu]
-/// instance depending upon which platform we are running on.
+/// It returns either a Material or Cupertino style menu instance depending upon which
+/// platform we are running on.
 ///
 /// The target platform is based on the current [Theme]: [ThemeData.platform].
 class FundingMenu extends StatelessWidget {

lib/ui/podcast/now_playing_options.dart

@@ -21,8 +21,8 @@ import 'package:provider/provider.dart';
 /// issue whereby the scroll view and [DraggableScrollableSheet] clash and therefore cannot
 /// be used together.
 ///
-/// See issues (64157)[https://github.com/flutter/flutter/issues/64157]
-///            (67219)[https://github.com/flutter/flutter/issues/67219]
+/// See issues [64157](https://github.com/flutter/flutter/issues/64157)
+///            [67219](https://github.com/flutter/flutter/issues/67219)
 ///
 /// If anyone can come up with a more elegant solution (and one that does not throw
 /// an overflow error in debug) please raise and issue/submit a PR.

lib/ui/widgets/episode_tile.dart

@@ -16,7 +16,7 @@ import 'package:flutter_dialogs/flutter_dialogs.dart';
 import 'package:intl/intl.dart' show DateFormat;
 import 'package:provider/provider.dart';
 
-/// An EpisodeTitle is built with an [ExpandedTile] widget and displays the episode's
+/// An EpisodeTitle is built with an [ExpansionTile] widget and displays the episode's
 /// basic details, thumbnail and play button.
 ///
 /// It can then be expanded to present addition information about the episode and further

lib/ui/widgets/podcast_image.dart

@@ -11,10 +11,10 @@ import 'package:flutter/material.dart';
 /// and error placeholder can be specified which will be rendered whilst the image is loading
 /// or has failed to load.
 ///
-/// We cache the image at a fixed sized of [cacheHeight] and [cacheWidth] regardlessof render
-/// size. By doing this, large podcast artwork will not slow the application down and the same
-/// image rendered at different sizes will return the same cache hit reducing the need for
-/// fetching the image several times for differing render sizes.
+/// We cache the image at a fixed sized of 480 regardless of render size. By doing this, large
+/// podcast artwork will not slow the application down and the same image rendered at different
+/// sizes will return the same cache hit reducing the need for fetching the image several times
+/// for differing render sizes.
 // ignore: must_be_immutable
 class PodcastImage extends StatefulWidget {
   final String url;