Apply suggestions from code review

packages/stream_chat_flutter/lib/src/localization/translations.dart

@@ -83,7 +83,7 @@ abstract class Translations {
   /// in the [StreamMessageListView]
   String unreadMessagesSeparatorText(
     @Deprecated('unreadCount is not used anymore and will be removed ')
-    int unreadCount,
+        int unreadCount,
   );
 
   /// The label for "connected" in [StreamConnectionStatusBuilder]

packages/stream_chat_flutter/lib/src/theme/message_theme.dart

@@ -23,7 +23,7 @@ class StreamMessageThemeData with Diagnosticable {
     this.avatarTheme,
     this.createdAtStyle,
     @Deprecated('Use urlAttachmentBackgroundColor instead')
-    Color? linkBackgroundColor,
+        Color? linkBackgroundColor,
     Color? urlAttachmentBackgroundColor,
     this.urlAttachmentHostStyle,
     this.urlAttachmentTitleStyle,
@@ -102,7 +102,7 @@ class StreamMessageThemeData with Diagnosticable {
     Color? reactionsBorderColor,
     Color? reactionsMaskColor,
     @Deprecated('Use urlAttachmentBackgroundColor instead')
-    Color? linkBackgroundColor,
+        Color? linkBackgroundColor,
     Color? urlAttachmentBackgroundColor,
     TextStyle? urlAttachmentHostStyle,
     TextStyle? urlAttachmentTitleStyle,