You can always edit the content of those fields from your Control Panel. Go to the subdomain, and you’ll see your story listed. Next to the title should be a grey click button that reads “Edit Story Info” which will take you to a new page with all the fields you filled in when posting the story. The content should be shown for each field within the field box, so you should be able to find what needs editing.
Once you’ve made the changes you need to make, at the very bottom is another click button reading “Edit Story.” Click that to save your changes.