fix formatting

pkgs/source_span/lib/src/highlighter.dart

diff --git a/pkgs/source_span/lib/src/highlighter.dart b/pkgs/source_span/lib/src/highlighter.dart
index 491dae5..d61ff9f 100644
--- a/pkgs/source_span/lib/src/highlighter.dart
+++ b/pkgs/source_span/lib/src/highlighter.dart
@@ -288,7 +288,9 @@
 
     final currentColor = current == null
         ? null
-        : current.isPrimary ? _primaryColor : _secondaryColor;
+        : current.isPrimary
+            ? _primaryColor
+            : _secondaryColor;
     var foundCurrent = false;
     for (var highlight in highlightsByColumn) {
       final startLine = highlight?.span.start.line;