Fix formatting in generated LSP file header

Change-Id: I1447a4250ab0e8c8fcd26a85ff5949c587a6a77f
Reviewed-on: https://dart-review.googlesource.com/c/89517
Commit-Queue: Danny Tuppeny <dantup@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Auto-Submit: Danny Tuppeny <dantup@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
diff --git a/pkg/analysis_server/tool/lsp_spec/generate_all.dart b/pkg/analysis_server/tool/lsp_spec/generate_all.dart
index 909a06b..6cd6008 100644
--- a/pkg/analysis_server/tool/lsp_spec/generate_all.dart
+++ b/pkg/analysis_server/tool/lsp_spec/generate_all.dart
@@ -84,7 +84,8 @@
 import 'dart:core' as core show deprecated;
 import 'dart:convert' show JsonEncoder;
 import 'package:analysis_server/lsp_protocol/protocol_special.dart';
-import 'package:analysis_server/src/protocol/protocol_internal.dart' show listEqual, mapEqual;
+import 'package:analysis_server/src/protocol/protocol_internal.dart'
+    show listEqual, mapEqual;
 import 'package:analyzer/src/generated/utilities_general.dart';
 
 const jsonEncoder = const JsonEncoder.withIndent('    ');