chore: update default lyrics providers and about links

lib/models/settings.dart

@@ -139,13 +139,7 @@ class AppSettings {
     this.localLibraryShowDuplicates = true,
     this.localLibraryAutoScan = 'off',
     this.hasCompletedTutorial = false,
-    this.lyricsProviders = const [
-      'lrclib',
-      'musixmatch',
-      'netease',
-      'apple_music',
-      'qqmusic',
-    ],
+    this.lyricsProviders = const ['lrclib', 'apple_music'],
     this.lyricsIncludeTranslationNetease = false,
     this.lyricsIncludeRomanizationNetease = false,
     this.lyricsMultiPersonWordByWord = false,

lib/models/settings.g.dart

@@ -69,7 +69,7 @@ AppSettings _$AppSettingsFromJson(Map<String, dynamic> json) => AppSettings(
       (json['lyricsProviders'] as List<dynamic>?)
           ?.map((e) => e as String)
           .toList() ??
-      const ['lrclib', 'musixmatch', 'netease', 'apple_music', 'qqmusic'],
+      const ['lrclib', 'apple_music'],
   lyricsIncludeTranslationNetease:
       json['lyricsIncludeTranslationNetease'] as bool? ?? false,
   lyricsIncludeRomanizationNetease: