fixes after review

testscommon/dataRetriever/shardResolversContainerFactoryMock.go

@@ -4,17 +4,20 @@ import (
 	"github.com/multiversx/mx-chain-go/dataRetriever"
 )
 
+// ShardResolversContainerFactoryMock -
 type ShardResolversContainerFactoryMock struct {
 	CreateCalled func() (dataRetriever.ResolversContainer, error)
 }
 
+// Create -
 func (s *ShardResolversContainerFactoryMock) Create() (dataRetriever.ResolversContainer, error) {
 	if s.CreateCalled != nil {
 		return s.Create()
 	}
 	return &ResolversContainerStub{}, nil
 }
 
+// IsInterfaceNil -
 func (s *ShardResolversContainerFactoryMock) IsInterfaceNil() bool {
 	return s == nil
 }