chore: fix linting issues exposed by fixing golangci-lint (#12895)

Co-authored-by: Marko <marbar3778@yahoo.com>
Co-authored-by: Julien Robert <julien@rbrt.fr>

db/types.go

@@ -146,16 +146,16 @@ type ReadWriter interface {
 //
 // Typical usage:
 //
-//   var itr Iterator = ...
-//   defer itr.Close()
+//	var itr Iterator = ...
+//	defer itr.Close()
 //
-//   for itr.Next() {
-//     k, v := itr.Key(); itr.Value()
-//     ...
-//   }
-//   if err := itr.Error(); err != nil {
-//     ...
-//   }
+//	for itr.Next() {
+//	  k, v := itr.Key(); itr.Value()
+//	  ...
+//	}
+//	if err := itr.Error(); err != nil {
+//	  ...
+//	}
 type Iterator interface {
 	// Domain returns the start (inclusive) and end (exclusive) limits of the iterator.
 	// CONTRACT: start, end readonly []byte