Allow custom field name in HighlightBackend#302

barseghyanartur wants to merge 2 commits intomasterbarseghyanartur/django-elasticsearch-dsl-drf:masterfrom

allow-custom-field-name-in-highlight-backendbarseghyanartur/django-elasticsearch-dsl-drf:allow-custom-field-name-in-highlight-backendCopy head branch name to clipboard